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This blog is about my personal ideas of ARK: Survival Evolved's dinosaurs and creatures.

Creatures

Dinosaurs

Saurischians

Theropods
  • Chilesaurus: A herbivorous theropod dinosaur that lived approximately 145 million years ago in the Late Jurassic period of Chile. Chilesaurus measures 3.2 metres (10.5 ft) from nose to tail. The holotype is a smaller individual of half that length. The most unusual feature of Chilesaurus consists in its spatula-shaped elongated teeth, obliquely pointing forwards. This dentition, unique in the Theropoda, is typical for a herbivore, indicating Chilesaurus was a plant-eater, unusual because its direct dinosaur relatives were meat-eaters. Another adaptation for eating plants is the backward-pointing pubic bone in the pelvis, making room for a large gut. Such a pelvic arrangement is typical for the Ornithischia, to which group part of the fossils of Chilesaurus were at first incorrectly referred. The hindlimb of Chilesaurus had become less adapted to running as shown by a small cnemial crest on the front top of the shinbone, and a broad foot with a weight-bearing first toe. Chilesaurus could defend itself with a strong arm, bearing a large first claw which could be extended outwards, just as with basal Sauropodomorpha. In Ark, Chilesaurus will be portrayed as a medium-sized herbivorous Dilophosaur that can be found almost anywhere except for the snow biome, unlike other carnivorous theropods, Chilesaurus is mostly a herbivore that can live in small herds alongside the other herbivores nearby. They are steady supply of food for the island's medium to larger carnivores. They are decent source of If tamed, is not big enough to be ridden with a saddle, Chilesaurus is easy to tame.
  • Sarcosaurus: TBA
    • Credit for Sarcosaurus' behavior goes out to Teratophoneus! Thanks for letting me use your awesome idea!
Coelurosaurs
  • Balaur: A theropod dinosaur which lived in what is now Romania during the late Cretaceous period. It is the type species of the monotypic genus Balaur which was described by scientists in August 2010, and was named after the balaur (Romanian pronunciation: ba-la-ur), a dragon of Romanian folklore. The specific name bondoc means "stocky", so Balaur bondoc means "Stocky dragon" in Romanian. This name refers to the greater musculature that Balaur had compared to its relatives. The genus is known from two partial skeletons including the type specimen. Seventy million years ago, world sea levels were higher, and the location where its fossils are found was a part of the European Archipelago called Hațeg Island which is also referred to as the "Island of the Dwarf Dinosaurs". Unlike other early members of the group Paraves, which includes Velociraptor, Troodon, and Archaeopteryx, this theropod had not just one but two large, retractable, sickle-shaped claws on each foot, and its limbs were proportionally shorter and heavier than those of its relatives. As with other dinosaurs from Hațeg, such as Magyarosaurus, a dwarf sauropod, its strange features have been argued to show the effects of its island habitat on its evolution. In Ark, Balaur will be portrayed as a smaller omnivorous Utahraptor, unlike the raptors, Balaur is not aggressive towards the player unless provoked and will mostly avoid other nearby medium to larger carnivores like Dilophosaurs, Raptors and Carnosaurus. Balaur hunts smaller to medium sized prey and is the only theropod to eat berries. If tamed, Balaur is not big enough to be ridden with a saddle, its speed is very quick that will outrun its prey in packs and being an omnivore it will harvest a berries and other rare resources. They can be found in forest and jungle areas of the island
  • Daemonosaurus: A theropod from the Late Triassic of New Mexico. Fossils have been found from deposits in the Chinle Formation, which is latest Triassic in age. While theropods had diversified into several specialized groups by this time, Daemonosaurus is a basal theropod that lies outside the clade Neotheropoda. Daemonosaurus is unusual among early theropods in that it had a short skull and long protruding teeth. In Ark, these small carnivores will act as a nocturnal vampire that will ambush other small animals and even humans by biting its prey with blood lose that its prey will slowly be weak and will die untreated.
  • Fukuiraptor: TBA
  • Gojirasaurus: A large trassic theropod named after the giant monster movie character Gojira (the Japanese name for Godzilla). Gojirasaurus is one of the largest meat-eating dinosaurs known from the Triassic Period, almost the size of its relative, the large coelophysoid Dilophosaurus. The size of its tibia was 469 mm, which was comparable to that of Liliensternus (409 mm) and Dilophosaurus (555 mm), suggesting that it was a large triassic dinosaur, estimated to be about 5.5 m (18 ft) long, which can be extrapolated to a weight of approximately 150–200 kg (330–440 lb). In Ark, Gojirasaurus would possess a unique survival tactic that produces a thick black saliva that is full of bacteria. This deadly bacteria cocktail is used when it hunts bigger prey, if its prey was bitten by a Gojirasaurus, it will slowly be weak and slowly die due to a infection, caused by the bacteria. If tamed, Gojirasaurus would be decent mount and a decent pack animal.
    • Credit for Gojirasaurus' behavior goes out to Teratophoneus! Thanks for letting me use your awesome idea!
  • Ornitholestes: TBA
Herrerasaurids
  • Herrerasaurus: TBA
  • Staurikosaurus: TBA
    • Credit for Staurikosaurus' behavior goes out to Hellraptor! Thanks for letting me use your awesome idea!
Coelophysids
  • Coelophysis: TBA
  • Procompsognathus: A coelophysid that lived approximately 210 million years ago during the later part of the Triassic Period in what is now Germany. Procompsognathus was a small-sized, lightly built, ground-dwelling, bipedal carnivore, that could grow up to 1 m (3.3 ft) long. In Ark, it will be portrayed as a much more dangerous Compsognathus with a venomous saliva, with narcotic effects making the victim feel dizzy and sleepy. Like Compys, they live in large packs around the island and feeds on carcases and unusually feces. Once tamed, similar to Compys, but can be devastating in large packs with the narcotic saliva.
    • Credit for the Procompsognathus' behavior goes out to Hellraptor! Thanks for letting me use your awesome idea!
  • Segisaurus: TBA
    • Credit for Segisaurus' behavior goes out to Hellraptor! Thanks for letting me use your awesome idea!
Tyrannosaurs
  • Albertosaurus: TBA
  • Guanlong: TBA
  • Kileskus: TBA
  • Nanotyrannus: TBA
  • Nanuqsaurus: TBA
    • Credit for Nanuqsaurus' behavior goes out to PaleoCheckers! Thanks for letting me use your awesome idea!
  • Qianzhousaurus: TBA
    • Credit for Qianzhousaurus' behavior goes out to PaleoCheckers! Thanks for letting me use your awesome idea!
  • Raptorex: TBA
  • Yutyrannus: TBA
Compsognathids
  • Sinocalliopteryx: TBA
Dromaeosaurs
  • Achillobator: TBA
  • Austroraptor: TBA
  • Bambiraptor: A Late Cretaceous, 72-million-year-old, bird-like dromaeosaurid theropod dinosaur described by scientists at the University of Kansas, Yale University, and the University of New Orleans. The holotype fossil is less than one meter long, although this specimen appears to be a juvenile, and it is possible that Bambiraptor is really just a juvenile Saurornitholestes. Because of its small size, it was named Bambiraptor feinbergi, after the familiar Disney movie character (Bambi) and the surname of the wealthy family who bought and lent the specimen to the new Graves Museum of Natural History in Florida. In Ark, Bambiraptor will be portyreed as a similar sized Compsognathus that can be found all across the island, unlike Compys, Bambiraptor is completely harmless and passive towards the player, but they are skittsh towards other smaller to larger creatures that come to close. Bambiraptor hunts insects and small prey like Dodos. If tamed, Bambiraptor is extremely easy to tame for beginners due to be easily lured by humans to beg for food and will be very cute pets to own.
    • Credit for Bambiraptor' behavior goes out to PaleoCheckers! Thanks for letting me use your awesome idea!
  • Dakotaraptor: TBA
  • Deinonychus: TBA
  • Velociraptor: TBA
Troodontids

TBA

Alvarezsaurids
  • Mononykus: TBA
Scansoriopterygids
  • Epidexipteryx:
  • Yi: TBA
Ornithomimosaurs
  • Deinocheirus: TBA
  • Struthiomimus: TBA
Therizinosaurs
  • Segnosaurus: A small cousin of Therizinosaurus that lived a approximately 90 million years ago during the Late Cretaceous in what is now Mongolia. Segnosaurus was a rather large therizinosaurid. In 2010 Gregory S. Paul estimated the body length at 6 metres (19.5 ft), the weight at 1.3 tonnes. Segnosaurus had an elongated head, large clawed hands, a somewhat elevated torso, a broad strong pelvis, stocky legs and a short tail. In Ark, unlike its larger relative where it is aggresive when the player invades its territory. Segnosaurus is a peaceful herbivore unless approached, found in the forest and jungle areas, it lives in small family groups. Once tamed, unlike Therizinosaurus, while unable to carry as much as its larger cousin,
Oviraptorosaurs
  • Citipati: A oviraptorid theropod dinosaur from the Late Cretaceous Period of what is now Mongolia (specifically, the Djadokhta Formation of Ukhaa Tolgod, in the Gobi Desert). It is one of the best-known oviraptorids, thanks to a number of well-preserved skeletons, including several specimens found in brooding positions atop nests of eggs. These nesting specimens have helped to solidify the link between non-avian dinosaurs and birds. The type species, Citipati osmolskae, was described by James M. Clark, Mark Norell, and Rinchen Barsbold in 2001. A second, as yet unnamed species may also exist. Citipati is often confused with the similar Oviraptor. The largest Citipati were emu-sized animals and, at about 3 meters (10 ft) long, were the largest known oviraptorids until Gigantoraptor was described in 2007. Like other oviraptorids, Citipati had an unusually long neck and shortened tail, compared to most other theropods. Its skull was unusually short and highly pneumatized (riddled with openings in the bone structure), ending in a stout, toothless beak. Perhaps the most distinctive feature of Citipati was its tall crest, superficially similar to that of a modern cassowary. The crest was relatively low in the type species, C. osmolskae, with a nearly vertical front margin grading into the beak. In contrast, the crest of one referred specimen which has not yet been assigned a specific name (provisionally labeled C. sp.) was taller, with a prominent notch in the front margin, creating a squared appearance. In Ark, Citipati will be portrayed as a slightly taller and terratoraial Oviraptor, unlike Oviraptors, these oviraptorids are dangerous towards the player and often jump up and kick with their feet making bad wounds. Another thing is that Citipatis hunt and kill Dilophosaurs and other smaller to medium-sized theropods and even the Dilophosaurus sputatrix shows some fear when seeing this even if its much larger. If tamed, .They can be found in forest and jungle areas of the island
    • Credit for the Oviraptor behavior for Citipati goes out to Hellraptor! Thanks for letting me use your awesome idea!
  • Gigantoraptor: TBA
  • Incisivosaurus: TBA
  • Protarchaeopteryx: TBA
Spinosaurids
  • Irritator: TBA
  • Oxalaia: TBA
  • Suchomimus: TBA
Carnosaurs
  • Gasosaurus: TBA
Allosaurids
  • Saurophaganax:
Ceratosaurids
  • Ceratosaurus: TBA
Noasaurids
  • Elaphrosaurus: TBA
  • Masiakasaurus: A small theropod from Madasgascar. Its most unique feature were its teeth and jaws. It was probably a fish-eater, although some palaeontologists suggested they were used to catch insects. It was likely not an apex of its range since it was probably preyed on by the 20 foot long terror Majungasaurus. In Ark, these small carnivores will act as a small spinosaurus, catching fish on land.
Abelisaurids
  • Ekrixinatosaurus: TBA
    • Credit for Ekrixinatosaurus' behavior goes out to Teratophoneus! Thanks for letting me use your awesome idea!
  • Kryptops: A theropod dinosaur from the Early Cretaceous of Niger. It is known from a partial skeleton found at the Gadoufaoua locality in the western Ténéré Desert, in rocks of the Aptian-Albian age Elrhaz Formation. This dinosaur was described by Paul Sereno and Stephen Brusatte in 2008, with a single species to date: the type species K. palaios ("old"). In Ark, Kryptops will be portrayed as a cave dwelling Carnotaurus that is extremely dangerous if the player is going to be alone without other tribes are nearby in the caves. Kryptops has no natural predators in caves (Araneomorphus, Arthropluera, Onychonycteris, Pulmonoscorpius and Titanoboa) will most likely try to avoid Kryptops. If tamed, Kryptops is extremely difficult to tame because it is immune to narcotic blunt weapons such as tranquilizer arrows and darts (most predators in caves will sometimes hunt Kryptops but ending up getting themselves killed by Kryptops' immune to narcotic effects), the only way to tame it is to use slingshots and bolas to get it knocked out unconscious.
    • Credit for Kryptops' behavior goes out to PaleoCheckers! Thanks for letting me use your awesome idea!
  • Majungasaurus: TBA
  • Rajasaurus: TBA
  • Rugops: TBA
Neovenatorids
  • Neovenator: TBA
    • Credit for Neovenator's behavior goes out to PaleoCheckers! Thanks for letting me use your awesome idea!
Megalosauroids
  • Afrovenator: TBA
  • Monolophosaurus: A medium size cousin of Megalosaurus, Monolophosaurus is a tetanuran theropod dinosaur from the Middle Jurassic Shishugou Formation in what is now Xinjiang, China. It was named for the single crest on top of its skull. The only known species, Monolophosaurus jiangi, measured 5 metres in length and weighed 1,500 pounds. Monolophosaurus may have hunted in packs to take down Sauropods like Mamenchisaurus, although no evidence have been found of Monolophosaurus hunting in packs, it may have hunted in packs like many other Theropods. Monolophosaurus was a crested dinosaur, but it wasn't closely related to other crested dinosaurs like Dilophosaurus. In fact, it was closer related to the more advanced tetanurans, like Allosaurus. In Ark, Monolophosaurus will as a diurnal Megalosaurus, but with a unique survival tactic to change its crest and neck colour depending on the dinosaur's mood. It had interesting way to warn the players from getting to closed by snapping its jaws and hiss angry, one member misunderstood the warning and got attacked, almost killed by the dinosaur.
Piatnitzkysaurids
  • Piatnitzkysaurus: TBA
Carcharodontosaurids
  • Carcharodontosaurus: TBA
  • Concavenator: TBA
  • Eocarcharia: TBA
  • Mapusaurus: TBA
  • Tyrannotitan: TBA
Metriacanthosaurids
  • Metriacanthosaurus: TBA
  • Yangchuanosaurus: TBA
Sauropods
  • Amargasaurus: TBA
  • Apatosaurus (Not to be confoused with Ark's Brontosaus): TBA
  • Bonitasaura: TBA
  • Dreadnoughtus: TBA
  • Magyarosaurus: TBA
  • Mamenchisaurus: A sauropod dinosaur including several species, known for their's remarkably long neck which made up half the total body length. It is known from numerous species which ranged in time from 160 to 145 million years ago, from the Oxfordian to Tithonian ages of the late Jurassic Period of China, and the largest species may have reached 35 m (115 ft) in length. Mamenchisaurus was first discovered in 1952 on the construction site of the Yitang Highway in Sichuan, China. The partial skeleton fossil was then studied, and named Mamenchisaurus constructus in 1954, by the renowned Chinese paleontologist Professor C. C. Young. The type specimen had an incomplete neck with 14 vertebra preserved and none of these were complete. M. constructus has been estimated around 13 m (43 ft) and 15 m (49 ft) in length. In 1972, a second species was described, named Mamenchisaurus hochuanensis, with a neck that reached up to 9.3 m (31 ft) in length. This species had a complete neck preserved which contained 19 vertebrae. This was the longest neck known until the description of Supersaurus, based on a single neck vertebra, BYU 9024, with an estimated neck length of about 14 meters (46 feet). Another long-necked sauropod exceeding M.hochuanensis was Sauroposeidon which was discovered in 1994. Based on the Sauroposeidon holotype, which only preserved 4 neck vertebra, its neck was estimated to be between 11.25 and 12 meters (36.9–39.4 feet) long. In 1993, Mamenchisaurus sinocanadorum was described, which consisted of skull material and the first four cervical vertebrae. This species possessed the longest cervical rib of any described sauropod dinosaur, measuring 4.1 m (13.5 ft). This is longer than the longest Sauroposeidon cervical rib, which measures 3.42 m (11.2 ft). Additional remains attributed to this species, but not yet formally described, belong to one of the largest dinosaurs known—the restored skeleton measuring 35 metres (115 ft) in length with a neck measuring 18 metres (59 ft) long. In 2001, another Mamenchisaurus hochuanensis specimen was described. It had skull, pectoral girdle and forelimb material preserved, all of which were missing from the holotype. It was also found with four fused tail vertebra, which have expanded neural arches and taller neural spines, that belong at the tip of the tail. It’s thought that these could be a weapon, such as a tail club, or a sensory organ. Other Chinese sauropods, Shunosaurus and Omeisaurus, are also known to have had ’tail clubs’ but they differ in shape to that of Mamenchisaurus hochuanensis. In Ark, Mamenchisaurus will be portrayed as a bigger Brontosaurus with a longer neck and an aggressive temperament if provoked or approached to it.
    • Credit for the Mamenchisaurus' behavior goes out to Hellraptor and HodariNundu! Thanks for letting me use your awesome idea!
  • Mussaurus: TBA
  • Plateosaurus: TBA
  • Shunosaurus: TBA
=Diplodocids
  • Kaatedocus:

Ornithischians

  • Kulindadromeus: TBA
  • Scelidosaurus: TBA
Stegosaurians
  • Gigantspinosaurus: TBA
  • Miragaia: TBA
    • Credit for the Kentrosaurus' behavior from Jurassic Park: Operation Genesis goes out to Blue Tongue Entertainment! Thanks for letting me use your awesome idea!
  • Wuerhosaurus: A stegosaurid dinosaur from the Early Cretaceous Period of China and Mongolia. As such, it was one of the last genera of stegosaurians known to have existed, since most others lived in the late Jurassic. Wuerhosaurus homheni was probably a broad-bodied animal. Gregory S. Paul in 2010 estimated the length at 7 metres (23 ft) and the weight at four tonnes. Only a few scattered bones have been found, making a full restoration difficult. Its dorsal plates were at first thought to have been much rounder or flatter than other stegosaurids, but Maidment established this was an illusion caused by breakage: their actual form is unknown. Wuerhosaurus homheni had a pelvis of which the front of the ilia strongly flared outwards indicating a very broad belly. The neural spines on the tail base were exceptionally tall. Wuerhosaurus ordosensis was estimated by Paul to have been 5 metres (16.5 feet) long and weigh 1.2 tonnes. It too has a broad pelvis but the neural spines are shorter. The neck seems to have been relatively long. In Ark, Wuerhosaurus will be portrayed as a similar-sized Stegosaurus and often herd with them. Unlike the Stego, Wuerhosaurus is friendly and curious towards the player unless provoked. If tamed, like it cousin, Wuerhosaurus will act a same exact role as the Stegosaurus. They can be found anywhere except for the swamp and snow biome.
Ankylosaurs
  • Euoplocephalus (Not to be confoused with Ark's Ankylosaurus design): TBA
    • Credit for the Euoplocephalus' behavior goes out to Hellraptor! Thanks for letting me use your awesome idea!
  • Panoplosaurus: TBA
  • Minmi: TBA
Ceratopsians
  • Agathaumas: TBA
  • Eotriceratops: TBA
  • Leptoceratops: TBA
  • Microceratus: meaning "small-horned", is a small ceratopsian dinosaur that lived in the Cretaceous period in Asia. It walked on two legs, had short front arms, a characteristic ceratopsian frill and beak-like mouth, and was around 2 feet (0.6 m) long. It was one of the first ceratopsians, or horned dinosaurs, along with Psittacosaurus in Mongolia. The type species, Microceratops gobiensis, was first described by Bohlin in 1953. However, the generic name was already preoccupied by an ichneumon wasp (subfamily Gelinae) with the same name. Though much of the material has since been reassigned to the genus Graciliceratops, a replacement name Microceratus was created by Mateus in 2008 for the type specimen. In Ark, Microceratus will be portrayed as a smaller and bipedal Triceratops, unlike the trike, Microceratus are extremely weak and run very quickly that will flee from danger if provoked. It will be served as a decent food source for all carnivores. If tamed, unlike its cousin, Microceratus can harvest a decent amount of berries and will be used as cute pets to own.
  • Monoclonius: A ceratopsian dinosaur found in the Late Cretaceous layers of the Judith River Formation in Montana, northern US, and the uppermost rock layers of the Dinosaur Park Formation in Alberta, Canada dated to between 75 and 74.6 million years ago. Monoclonius was named by Edward Drinker Cope in 1876. Later, much taxonomic confusion was caused by the discovery of Centrosaurus, a very similar genus of ceratopsian, that is known from much better remains. Today, typical Monoclonius specimens are usually believed to be juveniles or subadults, in many cases of other genera such as Centrosaurus. Those specimens that remain under the name Monoclonius are mostly too incomplete or immature to be confidently matched with adult specimens from the same time and place. This is especially true of the type species, Monoclonius crassus. Therefore, Monoclonius is now usually considered a nomen dubium, pending further study. In Ark, Monoclonius will be portrayed as a Triceratops of the central areas of the island (hence the similarities of Centrosaurus) while living in small herds alongside the Trike and other herbivores nearby. It would provide a steady supply of food for the island's medium-large sized carnivores. If tamed, Monoclonius is a fairly easy to tame for its slightly faster and still slow speed like its larger cousin for harvesting berries and thatch.
  • Nasutoceratops: TBA
  • Pentaceratops:
  • Psittacosaurus: TBA
  • Protoceratops: TBA
  • Styracosaurus: TBA
  • Torosaurus: TBA
Hadrosaurs and Iguanodontids
  • Corythosaurus: meaning "helmet lizard", is a hadrosaurid dinosaur from the Upper Cretaceous Period, about 77–75.7 million years ago. It lived in what is now North America. Its name means "helmet lizard", derived from Greek κόρυς. It was named and described in 1914 by Barnum Brown. Corythosaurus is now thought to be a lambeosaurine, related to Nipponosaurus, Velafrons, Hypacrosaurus, and Olorotitan. Corythosaurus has an estimated length of 9 metres (30 ft), and has a skull, including the crest, that is 70.8 centimetres (27.9 in) tall. Corythosaurus is known from many complete specimens, including the nearly complete holotype found by Brown in 1911. The holotype skeleton is only missing the last section of the tail, and part of the forelimbs, but was preserved with impressions of polygonal scales. Corythosaurus is known from many skulls with tall crests. The crests resemble the crests of the cassowary and a Corinthian helmet. The most likely function of the crest is thought to be vocalization. As in a trombone, sound waves would travel through many chambers in the crest, and then get amplified when Corythosaurus exhaled. A Corythosaurus specimen has been preserved with its last meal in its chest cavity. Inside the cavity were remains of conifer needles, seeds, twigs, and fruits: Corythosaurus probably fed on all of these. The two species of Corythosaurus are both present in slightly different levels of the Dinosaur Park Formation. Both still co-existed with theropods and other ornithischians, like Daspletosaurus, Brachylophosaurus, Parasaurolophus, Scolosaurus, and Chasmosaurus. In Ark, Corythosaurus will be portrayed as a helmet-headed Parasaurolophus with a similar personality and often herd with. Like the parasaur, they are friendly to the player up close without scarring it but when provoked or when predators are nearby, Corythosaurus will use its plate like crest to make loud sounds to warn its cousin and other herd members of danger. It will be served as a food source for medium and large carnivores. If tamed, similar the Parasaur, Corythosaurus is a easy tame for beginners to start riding it across the island. Corythosaurus' loud call is extremely useful for calling for help or signal your tribe to locate where you are. They can be found anywhere except for the swamp and snow biome.
  • ‬Edmontosaurus: The classic duck-billed dinosaur, and one of the largest of its kind, Edmontosaurus was a 40-foot-long hadrosaur that lived alongside the Tyrannosaurus rex and Triceratops right before the extinction event that killed all the dinosaurs. Able to eat almost any plant matter, these herbivores had specialized batteries of small peg-like teeth that could number almost 3,000 per dinosaur. In Ark, Edmontosaurus would act like a larger version of the Parasaurolophus, serving as a popular prey item for large carnivores.
  • Hadrosaurus: TBA
  • Maiasaura: TBA
  • Muttaburrasaurus: TBA
  • Ouranosaurus: TBA
  • Ugrunaaluk: TBA
Pachycephalosaurs
  • Homalocephale: A pachycephalosaurid dinosaur which lived during the Late Cretaceous period of what is now Mongolia, 80 million years ago. The genus was described in 1974 by Osmólska & Maryañska, and consists of a single species, Homalocephale calathocercos, though this may be a synonym (and juvenile form) of Prenocephale. Homalocephale was 1.8 metres (6 ft) long and herbivorous. Unlike other definitely adult pachycephalosaurs (though similar to probable juvenile specimens referred to Dracorex and Goyocephale), Homalocephale sported a flat, wedge-shaped skull roof. Nonetheless, the surface of the skull was fairly thickened. The species is also noted for having an unusually broad pelvis, which lead some paleontologists to suggest that the wide hips were for giving birth to live young. Others have suggested that the width served to protect vital organs from harm during flank-butting. Homalocephale also had rather long legs, indicating a fast-moving gait. The type species, Homalocephale calathocercos, was described from an incomplete skull and postcranial material. The specimen has large openings on the top of the skull, a distinct frontoparietal suture, low and long infratemporal fenestrae, and a large, round eye socket. The forehead is notably rough, with multiple nodules on the lateral and posterior sides of the squamosal bone. Palaeontologists concluded that the specimen was an adult, despite the fact that the sutures are discernible and that it had a flat skull (a juvenile trait in many pachycephalosaurid species). In 2010, a study by Nick Longrich and colleagues suggested that flat-headed pachycephalosaurs were just juvenile forms of dome-headed adults, a view also supported by the earlier analysis of Horner and Goodwin in 2009. Longrich and colleagues suggested that Homalocephale is actually the juvenile or sub-adult stage of Prenocephale. In Ark, Homalocephale will be portrayed as a smaller Pachycephalosaurus that are harmless and often herd with its larger relative. Like its relative, Homalocephale are calm towards the player but if provoked Homalocephale use it call to warn its relative (Pachys will often defend the Homalocephale and attack the player or preator while the Homalocephale is fleeing for safety) and other larger herbivores nearby. Homalocephale's head is not as thick as a Pachys and are probably used for display than defense. It will be served as a food source for smaller and medium-sized carnivores. If tamed, unlike the Pachy, Homalocephale is not big enough to be ridden with a saddle, they will be a cute pet to own. They can be found in the plains of the island. They live in small groups or along with other larger dinosaurs and creatures, including Pachycepahlosaurus.
  • Stygimoloch: TBA

Herbivores

  • Dryosaurus: A larger cousin of Hypsilophodon, Dryosaurus measured about 14 feet long, living in herds like its smaller cousin. In Ark, like its smaller cousin, these agile dinosaurs would provide a steady supply of food for the island's smaller carnivores.
  • Hypsilophodon: A small English dinosaur about 6 feet in length, Hypsilophodon was a herd-dwelling dinosaur that looked like a tiny, lightly-built hadrosaur with a smaller, more birdlike head. In Ark, these fast-running animals would be common sights in the game, scampering around in forests and plains. Not only would a Hypsilophodon provide a cute pet, it would also serve as a basic source of food for many smaller carnivores.
  • Leaellynasaura:

Mammals

  • Amphicyon: TBA
  • Crusafontia: TBA
  • Cronopio: TBA
  • Leptictidium: TBA
  • Patriofelis: TBA
  • Repenomamus: TBA
  • Sarkastodon:
  • Volaticotherium: TBA

Egg-laying Mammals

  • Megalibgwilia:
  • Obdurodon:

Marsupials

  • Alphadon: TBA
  • Balbaroo: TBA
  • Borhyaena: TBA
  • Didelphodon: TBA
  • Ekaltadeta: TBA
  • Diprotodon: The largest marsupial to ever live, Diprotodon looked like a heavily built wombat/bear hybrid the size of a hippo, and may have inspired legends of the Australian bunyip. In Ark, herd animals, herds of Diprotodons would stay near bodies of water, feeding on vegetation and being fed upon by spinosaurs and crocodiles. For players, these marsupials would provide a good amount of food, and could be used as draft animals.
  • Giant Koala (Phascolarctos stirtoni): TBA
  • Phascolonus: A giant prehistoric ancestor of the modern day wombat. The largest species, Phascolonus gigas, weighed as much as 200 kg (450 lb). Phascolonus existed alongside an even larger marsupial, Diprotodon, which weighed as much as three tons and was distantly related to wombats. Both disappeared at the end of the Late Pleistocene in a Quaternary extinction event together with many other large Australian animals. In Ark, Phascolonus as a solitary large marsupial that can be found in forest and plains areas and would provide a steady supply of food for the island's smaller carnivores. If tamed, Phascolonus is not big enough to be ridden but it will be a companion pet for gathering some berries and rare resources.
  • Thylacine: TBA
  • Thylacosmilus: TBA
  • Wakaleo: TBA

Bats

  • Giant Vampire Bat (Desmodus draculae): TBA

Proboscideans

  • Deinotherium: TBA
  • Mastodon: TBA
  • Palaeoloxodon: TBA
  • Platybeodon: TBA
  • Stegotetrabelodon: TBA

Xenarthrans

Armadillos and Glyptodonts
  • Glyptodon: TBA
  • Peltephilus (Horned Armadillo): A dog-sized, armadillo which first inhabited Argentina during the Oligocene epoch, and became extinct in the Miocene epoch. Notably, the scutes on its head were so developed that they formed horns protecting its eyes. Aside from the horned gophers of North America, it is the only known fossorial horned mammal. Although it had traditionally been perceived as a carnivore because of its large, triangular-shaped teeth, Vizcaino and Farina argued in 1997 that Peltephilus was a herbivore. In Ark, these small animals would probably live in much the same way that the screaming hairy armadillo do today: nocturnal and feed on insects, small vertebrates and plant material. They burrows at the base of bushes and shrubs. Its "screaming" derives from its habit of squealing when threatened. If tamed,
Sloths
  • Eremotherium: TBA
  • Thalassocnus: TBA
Anteaters
  • Eurotamandua:
Pangolins
  • Giant Pangolin (Manis paleojavanica): TBA

Primates

Prosimians
  • Archaeoindris: TBA
  • Slow Loris (Nycticebus linglom): TBA
Monkeys
  • Dinopithecus: A giant prehistoric baboon (as big as a grown man) that lived during the Pliocene of South Africa. Males grew to 5 feet tall (1.52 m), but females were limited in size to 4 feet (1.22 m) tall. Very little is known about this animal. In Ark, these primates are like a larger sized Mesopithecus, but territorial and very dangerous to encounter in groups.
  • Macaca anderssoni: TBA
  • Pliobates: TBA
  • Stirtonia: TBA
Apes
  • Australopithecus: TBA
  • Oreopithecus: TBA
  • Sivapithecus: TBA

Lagomorphs

  • Nurulagus: A massive species of prehistoric rabbit from the island of Crete, Nurulagus was a huge rabbit almost six times as large as the typical cottontail rabbit, In Ark, would be essentially the rabbit version of a dodo. Like the dodo, these animals had no natural predators, making them easy targets for prehistoric colonists of the island. Much like dodos, Nurulagus would be relatively small animals that would provide a good source of food for beginners, and would be hunted by many predators of the island.
  • Palaeolagus: TBA
  • Prolagus: TBA

Rodents

  • Canariomys: TBA
  • Ceratogaulus (Horned Gopher):
  • Josephoartigasia: TBA
  • Laotian Rock Rat (Laonastes aenigmamus):
  • Maclear's Rat (Rattus macleari):
  • St Kilda House Mouse (Mus musculus muralis):

Hedgehogs and Relatives

  • Amphechinus: TBA
  • Deinogalerix: TBA

Carnivorans

Canids
  • Falkland Islands Wolf (Dusicyon australis)': TBA
  • Wild Dog (Lycaon sekowei): A prehistoric canid species from southern Africa that lived during the Pliocene and Pleistocene epochs. Like Lycaon pictus (African wild dog), the other species in the genus that is alive today, Lycaon sekowei was a hypercarnivore; however, its front paws were not as specialized for running. Very little is known about this animal. In Ark, these wild dogs would probably live in much the same way that there living relative do today: roaming open areas and feeding on small to medium-sized prey. If tamed,
Bears
  • Agriotherium: TBA
  • Ailurarctos: A prehistoric ancestor of modern day pandas from the Late Miocene of China, some 8 million years ago. Very little is known about this animal. In Ark, Ailurarctos will act as a passive direbear (Arctodus) found only in jungles and forests near bamboo plants in the island. If, tamed Ailurarctos is a good companion animal, it is to small to be equipped with a saddle.
  • Tyrant Polar Bear (Ursus maritimus tyrannus):
Pinnipeds
  • Caribbean Monk Seal (Neomonachus tropicalis): A species of monk seal native to the Caribbean and is now believed to be extinct. The Caribbean monk seals' main predators were sharks and humans. Overhunting of the seals for oil, and overfishing of their food sources, are the established reasons for the seals' extinction. The last confirmed sighting of the Caribbean Monk Seal was in 1952 at Serranilla Bank, between Jamaica and Nicaragua. In 2008 the species was officially declared extinct in the United States of America after an exhaustive search for the seals which lasted for about five years. This analysis was conducted by the National Oceanic and Atmospheric Administration and the National Marine Fisheries Service. Caribbean Monk Seals were closely related to the Hawaiian monk seals, which live around the Hawaiian Islands and are critically endangered, and Mediterranean monk seals, which are also critically endangered. An estimated 600 Mediterranean monk seals and 1,100 Hawaiian monk seals are alive in the wild. The first Caribbean monk seal to live in captivity for an extended period was a female seal that lived in The New York Aquarium. The seal was captured in 1897 and died in 1903, living in captivity for a total of five and one-half years. In 1909 The New York Aquarium acquired four Caribbean monk seals, three of which were yearlings (between one and two years old), and the other a mature male. In Ark,
  • Gomphotaria: TBA
  • Puijila: TBA
  • Thalassoleon: TBA
Raccoons and Relatives
  • Chapalmalania: TBA
Red Panda
  • Simocyon: TBA
Mustelids
  • Chamitataxus: A prehistoric ancestor to modern day badgers, Chamitataxus was a primitive badger lived during the Late Miocene, around 6 million years ago in what is now North America. In Ark, Chamitataxus would serve as a small predator hunting smaller creatures, while a common pet for tribes to own as a companion or a guard animal.
  • Megalenhydris: TBA
  • Megalictis: TBA
Cats
  • Barbary Lion (Panthera leo leo):
  • Dinictis: TBA
  • Dinofelis: TBA
  • Giant Cheetah (Acinonyx pardinensis): TBA
  • Panthera blytheae: TBA

Ungulates

Even-toed Ungulates
  • Andrewsarchus: The largest predatory land mammal to ever live, the Andrewsarchus had a body that looked like a combination of that of a wolf, a bear, and a tiger (a tiger-like tail), and a massive head vaguely shaped like a crocodile's, but was actually most closely related to whales. The size of a pickup truck, Andrewsarchus would be the Tyrannosaurus of the mammals, taking down mammoths, parasaurs, and even Triceratops on occasion. No doubt such a fearsome creature would make for an excellent mount.
Peccaries
  • Platygonus: TBA
Pigs
Cervids
Musk Deer
  • Blastomeryx: TBA
Mouse Deer
  • Dorcatherium: TBA
Deer
  • Eucladoceros: TBA
  • Stag-moose: TBA
Pronghorns
  • Hexameryx: TBA
Bovines
  • Bluebuck (Hippotragus leucophaeus): TBA
  • Gazella borbonica: TBA
  • Harrington's Mountain Goat (Oreamnos harringtoni):
  • Long-horned Bison (Bison latifrons)': TBA
  • Pyrenean Ibex (Capra pyrenaica pyrenaica): TBA
  • Soergelia: TBA
Camels
  • Camelops: TBA
  • Hemiauchenia: TBA
Giraffids
  • Bohlinia: TBA
  • Sivatherium: TBA
Hippopotamids
  • Giant Hippopotamus (Hippopotamus gorgops): TBA
Prehistoric Even-toed Ungulates
  • Entelodon: Nicknamed 'the pig from hell,' Entelodon was a massive carnivorous relative of pigs and hippos as large as rhinos that could easily crush bones with their powerful jaws. Able to chase after prey with their surprisingly long legs, these killing machines were feared by all, eating anything from fruit to dead fish to other entelodonts. In Ark, these creatures would be extremely dangerous animals in-game, often bullying other predators away from their kills, but when tamed, they would be excellent battle mounts, tearing apart anything that stands in their way with their mighty jaws.
Odd-toed Ungulates
Equids
  • Mesohippus: A dog-sized mammals were the ancestors of the modern day horses, but instead of hooves, these horses had two toes on each foot, flanking a small hoof. In Ark, Eohippus would act as, essentially, a faster, forest-dwelling dodo: A small animal with no real means of defending itself that prefers to flee rather than fight. They would make for a decent food source, and tamed ones would be cute pets and messengers, able to carry huge amount of small items like berries and notes and deliver them to other players with incredible speed.
  • Quagga (Equus quagga quagga): TBA
  • Syrian Wild Ass (Equus hemionus hemippus): TBA
  • Tarpan (Equus ferus ferus): TBA
Cetaceans
Dolphins
  • Baiji (Lipotes vexillifer): TBA
Whales
  • Ambulocetus: TBA
  • Dorudon: TBA
  • Cetotherium: TBA
  • Livyatan: TBA

Carnivores

  • Enhydriodon: TBA

Herbivores

  • Aepycamelus: Aepycamelus was a graceful species of camel that stood almost 10 feet tall at the shoulder and roamed in herds across the prehistoric grasslands of North America. Yeah, you read that right-camels actually evolved in North America, migrating to Africa and Asia during the Ice Age. In Ark, Aepycamelus would function as another food source for carnivores, but they would be among the least expensive mounts to feed and serve as a decent beast of burden.
  • Ancylotherium: A large cousin of Chalicotherium, fossils were found in Europe, Asia, and Africa during the Late Miocene-Early Pleistocene (9.0—1.8 mya), existing for approximately 7.2 million years. At 2 metres (6.6 ft) high at the shoulder and a weight of 450 kilograms (990 lb), Ancylotherium was relatively large, and was built rather like a goat. While it had long forelimbs and short hind limbs like other chalicotheres, it did not walk on its knuckles. It was similar to the North American genus Moropus. In Ark, unlike its cousin Chalicotherium where it hurls snow balls/mud rocks and gets aggressive if the player is to close to the its family. Ancylotherium is a peaceful herbivore found commonly in the plains and forests areas, it lives in small family groups or other herbivores. If tamed, Ancylotherium is similar to Chalicotherium without the catapult mechanism.
  • Arsinoitherium: TBA
  • Canthumeryx: TBA
  • Hipparion: TBA
  • Kubanochoerus: TBA
  • Megacerops: TBA
  • Miotapirus:
  • Synthetoceras: TBA
  • Teleoceras: TBA

Synapsids

  • Cotylorhynchus: This big herbivore looked like an immense lizard with a huge, fat body and a tiny head that seems to belong to another animal entirely. It's widely believed that these synapsids were extremely stupid, and scientists still have no idea how these creatures managed to survive for so long. In Ark, these creatures would essentially be reptomammalian Phiomias-extremely large, stupid herbivores that provide large amounts of meat. If domesticated, these animals could make good draft animals, or you can just use 'em for meat.
  • Cynognathus: TBA
  • Diictodon: TBA
  • Edaphosaurus: TBA
  • Estemmenosuchus: This synapsid was one of the weirdest animals to ever live. It was the size of a rhino and had a body and tail like a hippo's, legs like a crocodile's, a monstrous reptilian head equipped with sharp teeth, antler-like growths on its head, and weird bony protrusions on its cheeks. However, it was actually a herbivore that was most closely related to mammals. In Ark, Estemmenosuchus could probably act like an bear-a big, omnivorous animal that won't go out of its way to attack you, but will seriously kill you if you get it angry. It would definitely make a good guard animal.
  • Inostrancevia: TBA
  • Lycaenops: TBA
  • Placerias: meaning "broad body", is a dicynodont that lived during the late Carnian age of the Triassic Period (221-210 million years ago). Placerias belongs to a group of dicynodonts called Kannemeyeriiformes, which was the last known group of dicynodonts before most of dicynodonts became extinct at the end of the Triassic. Placerias was one of the largest herbivores in the Late Triassic, measuring up to 3.5 metres (11.5 ft) long and weighing up to a tonne (1000 kilograms). with a powerful neck, strong legs, and a barrel-shaped body. There are possible ecological and evolutionary parallels with the modern hippopotamus, spending much of its time during the wet season wallowing in the water, chewing at bankside vegetation. Remaining in the water would also have given Placerias some protection against land-based predators such as Postosuchus. Placerias used its beak to slice through thick branches and roots with two short tusks that could be used for defence and for intra-specific display. Placerias was closely related to Ischigualastia and similar in appearance. In Ark, these huge animals would probably live in much the same way that they do today: roaming open areas and feeding on ground plants. If tamed, these animals could be decent pack animals, but they would be far more efficient as a source of food instead, much like a Phiomia.
  • Rubidgea: TBA
  • Tiarajudens: TBA

Reptiles

  • Elginia: TBA
  • Desmatosuchus: TBA
  • Gracilisuchus: TBA
  • Petrolacosaurus: TBA
  • Parasuchus: TBA
  • Proterosuchus: TBA
  • Scutosaurus: TBA
  • Saurosuchus:
    • Credit for Saurosuchus' behavior goes out to PaleoCheckers! Thanks for letting me use your awesome idea!

Rhynchosaurs

  • Hyperodapedon: TBA

Rauisuchids

  • Postosuchus: TBA

Testudines

  • Archelon: meaning "ruler turtle", is a sea turtle, the largest of all sea turtles that has ever been documented, and the second heaviest turtles documented, behind Stupendemys. The first specimen of Archelon (YPM 3000) was collected from the Campanian-age Pierre Shale of South Dakota (a geological formation dated to 80.5 million years ago) by Dr. G.R. Wieland in 1895 and described by him the following year (Wieland, 1896). The largest Archelon fossil, found in the Pierre Shale of South Dakota in the 1970s, measures more than 4 metres (13 ft) long, and about 4.9 metres (16 ft) wide from flipper to flipper. It was a marine turtle, whose closest living relative in the present day is the leatherback sea turtle. Archelon lived at a time when a shallow sea covered most of central North America. Most of the known remains have been found in South Dakota and Wyoming. Though anatomically similar to the earlier species Protostega gigas, it was much larger. In Ark, Archelon would act as not only a stable food source, but a decent pack animal as well. However, these giant turtles wouldn't be able to go very deep, preferring to stay near the coast in moderately deep water.
  • Basilemys: TBA
  • Chelydropsis: TBA
  • Megalochelys: TBA

Lizards

  • Drepanosaurus: TBA
  • Longisquama: TBA
  • Rodrigues Day Gecko (Phelsuma gigas):

=Tuataras

  • Opisthias: TBA

Snakes

  • Laophis: TBA

Crocodilians

  • Araripesuchus: TBA
  • Deinosuchus: meaning "terrible crocodile", is a giant alligator that lived 80 to 73 million years ago, during the late Cretaceous period. The first remains were discovered in North Carolina (United States) in the 1850s; the genus was named and described in 1909. Additional fragments were discovered in the 1940s and were later incorporated into an influential, though inaccurate, skull reconstruction at the American Museum of Natural History. Knowledge of Deinosuchus remains incomplete, but better cranial material found in recent years has expanded scientific understanding of this massive predator. Although Deinosuchus was far larger than any modern crocodile or alligator, with the largest adults measuring 10.6 m (35 ft) in total length, its overall appearance was fairly similar to its smaller relatives. It had large, robust teeth built for crushing, and its back was covered with thick hemispherical osteoderms. One study indicated Deinosuchus may have lived for up to 50 years, growing at a rate similar to that of modern crocodilians, but maintaining this growth over a much longer time. Deinosuchus fossils have been found in 10 US states, including Texas, Montana, and many along the East Coast. Fossils have also been found in northern Mexico. It lived on both sides of the Western Interior Seaway, and was an opportunistic apex predator in the coastal regions of eastern North America. Deinosuchus reached its largest size in its western habitat, but the eastern populations were far more abundant. Opinion remains divided as to whether these two populations represent separate species. Deinosuchus was probably capable of killing and eating large dinosaurs. It may have also fed upon sea turtles, fish, and other aquatic and terrestrial prey. In Ark, these alligators would probably live in much the same way that the saltwater crocodile do today: roaming in the lakes and rivers and even the coastline of the island and feeding on larger prey items such as Parasaurolophus.
    • Credit for Deinosuchus' behavior for Hellraptor! Thanks for letting me use your awesome idea!
  • Gryposuchus: TBA
    • Credit for Gryposuchus' behavior goes out to Teratophoneus! Thanks for letting me use your awesome idea!
  • Purussaurus: TBA
  • Voay (Horned Crocodile):

Pterosaurs

  • Eurazhdarcho: TBA
  • Geosternbergia: A pterosaur from the Late Cretaceous period of Kansas was one of the largest pterosaur genera and had a wingspan of up to 7.25 metres (23.8 ft). Geosternbergia was traditionally considered a species, or occasionally subgenus, of the similar pterosaur Pteranodon in most major studies of pteranodontians through the 1990s. However, a 2010 review of the group by A.W.A. Kellner suggested that Pteranodon sternbergi was different enough from P. longiceps to belong in a distinct genus, to which Kellner also referred a new species, Geosternbergia maysei. In Ark, Geosternbergia will be portrayed as a medium-sized neutral Pteranodon that is passive to players unless provoked, it will become aggressive if its mate and offsprings are in danger by the player. If tamed, unlike Pteranodon, Geosternbergia is not big enough to be ridden.
  • Hatzegopteryx: TBA
  • Jeholopterus: TBA
  • Ludodactylus: TBA
  • Ornithocheirus: TBA
  • Peteinosaurus: TBA
  • Pterodaustro: A pterosaur from the Early Cretaceous of Argentina. It had 500 pairs of elastic, bristle-like teeth in the lower jaw, similar to baleen whales. Pterodaustro has a very elongated skull, up to 23.5 cm (9.25 in) long. The portion in front of the eye sockets comprises 85% of skull length. The long snout and lower jaws curve strongly upwards; the tangent at the point of the snout is perpendicular to that of the jaw joint. Pterodaustro probably waded in shallow water like flamingos, straining food with its tooth comb, a method called "filter feeding". Once it caught its food, Pterodaustro probably mashed it with the small, globular teeth present in its upper jaw.
  • Rhamphorhynchus: TBA
  • Scleromochlus: TBA
  • Thalassodromeus: TBA

Marine Reptiles

Tanystropheids

  • Tanystropheus: meaning "long vertebra", was a 6 metre (20 ft) long reptile that dated from the Middle Triassic period. It is recognizable by its extremely elongated neck, which measured 3 metres (10 ft) long - longer than its body and tail combined. The neck was composed of 12–13 extremely elongate vertebrae. Fossils have been found in Europe, the Middle East and China. Complete skeletons of juvenile individuals are most abundant in the Besano Formation of Italy, dating to 232 million years ago during the middle Triassic period (Ladinian stage). Tribelesodon, originally considered to be a pterosaur by Francesco Bassani in 1886, is now recognized as a junior synonym to Tanystropheus. The best-known species is Tanystropheus longobardicus. Other currently recognized species include Tanystropheus conspicuus and Tanystropheus meridensis. Another junior synonym of Tanystropheus is Procerosaurus. Two specimens were initially identified as Procerosaurus: The first was described as P. cruralis by von Huene in 1902. The second was described by Antonín Jan Frič in 1878 as a species of Iguanodon (Iguanodon exogirarum, later amended to exogyrarum), and is a highly doubtful dinosaurian-like bit of bone (possibly an internal cast of a tibia) from the Cenomanian (Late Cretaceous) of the Czech Republic. He reassigned the species to Procerosaurus in 1905 intending to erect it as a new genus, unaware that the genus name was already in use. George Olshevsky in 2000 substituted Ponerosteus for this species. In 2002, fossils of a related genus, Dinocephalosaurus, were collected in marine Triassic deposits in southwestern China. This new creature was 2.7 metres (8.9 ft) long, 1.7 metres (5.6 ft) of which was its neck and head. The specimen was described in 2004. In Ark,

Ichthyosaurs

  • Ophthalmosaurus: meaning “eye lizard” in Greek, is an ichthyosaur of the Middle to Late Jurassic period (165 to 145 million years ago), named for its extremely large eyes. It had a graceful 6 m (19.5 ft) long dolphin-shaped body, and its almost toothless jaw was well adapted for catching squid. Major fossil finds of this genus have been recorded in Europe and North America. Ophthalmosaurus had a body shaped like a tear-drop and a caudal fin like a half-moon. Its forelimbs were more developed than the hind ones, which suggests that the front fins did the steering while the tail did the propelling. Ophthalmosaurus' chief claim to fame is its eyes (some reaching about 9 inches or 220–230 mm in diameter) which were extremely large in proportion to its body. The eyes occupied almost all of the space in the skull and were protected by bony plates (sclerotic rings), which most likely assisted to maintain the shape of the eyeballs against water pressure at depth. The size of the eyes and the sclerotic rings suggests that Ophthalmosaurus hunted at a depth where there is not much light or that it may have hunted at night when a prey species was more active. In Ark,
  • Shonisaurus: TBA
  • Temnodontosaurus: TBA
  • Thalattoarchon: TBA

Plesiosaurs

  • Plesiosaurus (not to be confused with Ark's Elasmosaurus): A large marine sauropterygian reptile that lived during the early part of the Jurassic Period, and is known by nearly complete skeletons from the Lias of England. Although there are a number of modern-day myths surrounding this order of creature, such as the myth of the Loch Ness Monster, these creatures are known to be extinct. It is distinguishable by its small head, long and slender neck, broad turtle-like body, a short tail, and two pairs of large, elongated paddles. It lends its name to the order Plesiosauria, of which it is an early, but fairly typical member. It contains only one species, Plesiosaurus dolichodeirus. Plesiosaurus brachypterygius, Plesiosaurus guilielmiiperatoris, and Plesiosaurus tournemirensis were assigned to new genera, Hydrorion, Seeleyosaurus and Occitanosaurus. In Ark, Plesiosaurus will be portrayed as a smaller (still exaggeratedly large in size than normally) and friendly unless it is provoked than its larger aggressive cousin, Elasmosaurus.
  • Polycotylus: TBA

Mosasaurs

  • Goronyosaurus: A 6-7 meter (20-23 feet) crocodile-like mosasaur from the Late Cretaceous (Maastrichtian,) of Sokoto State, Niger and northwestern Nigeria. Very little is known about this animal. In Ark, Goronyosaurus will be portrayed as a medium-sized Mosasaurus that lives in the deeper and murky waters of the swamp biome and it is a master of disguise and like a wobbegong, a shark that camouflage itself with his fringes, goronyosaurus has fringes too. They run along the whole body and the wood and moss like colouration make its camouflage perfect. If tamed, Goronyosaurus is extremely difficult to tame due to its colors that blend in pefectly in its environment, but taming it is very useful for its speed and camouflage abilities, if the player is wearing the Ghillie suit while riding on the Goronyosaurus you will be blend in very well while other predators (even the Megapiranhas) in the swamp will ignore you and your mount to be mistaken as moss floating in the water.
    • Credit for Goronyosaurus' behavior goes out to Teratophoneus! Thanks for letting me use your awesome idea!
  • Halisaurus: TBA
  • Phosphorosaurus: TBA
  • Tylosaurus: TBA

Amphibians

Temnospondyls

  • Koolasuchus: TBA
  • Mastodonsaurus: TBA
  • Platyhystrix: TBA
  • Prionosuchus: A large temnospondyl that lived in the middle Permian period (270 million years ago). Its fossils have been found in what is now northeastern Brazil. The fragmentary remains of this animal have been found in the Pedra do Fogo Formation in the Parnaiba Basin of Northeastern Brazil, and it was described by L.I. Price in 1948. The incomplete skull of the holotype specimen has been estimated to be 50 centimetres (20 in) long. Several more fragmentary specimens have been found. One very fragmentary but very large specimen (BMNH R12005) appears to have come from an individual nearly three times the size of most other specimens, and may have had a skull that measured up to 1.6 metres (5.2 ft) long. Based on related species, the total body length of this specimen has been estimated at about 9 metres (30 ft), making it the largest known species of temnospondyl. With an elongated and tapered snout, numerous sharp teeth, long body, short legs, and a tail adapted for swimming, its general appearance was very similar to a modern crocodile, particularly to the gharial, and it probably had a similar lifestyle as an ambush aquatic predator feeding on fish and other aquatic animals. Living in Ark's rivers and lakes, these amphibians would essentially act like slightly weaker versions of the Sarcosuchus, but they would be much more useful for exploring underwater areas, as they can stay underwater for almost twice as long as its crocodilian rival.

Frogs and Toads

  • Palaeobatrachus: TBA

Birds

Flying Birds

  • Archaeopsittacus: TBA
  • Alexornis: TBA
  • Confuciusornis: TBA
  • Giant Marabou Stork (Leptoptilos robustus): TBA
  • Giant Swan (Cygnus falconeri): A very large Siculo-Maltese swan known from the Middle Pleistocene. Its dimensions are described as exceeding those of the living mute swan by one-third, which would give a bill-to-tail length of about 190–210 cm (based on 145–160 cm for Cygnus olor). It would have been taller, though not heavier, than the region's dwarf elephants. Due to its size, it may have been flightless. It became extinct before the increase in human activity in the region, so its disappearance is thought to have resulted from extreme climate fluctuations or the arrival of superior predators and competitors. In Ark, these huge birds would probably live in much the same way that mute swan do today: roaming open lakes and river area where they feed on aquatic plants, giants swans are territorial when the player and other creatures on the get to close or provoked. If tamed, similar to the Pelagornis, giant swans are.
  • Great Auk (Pinguinus impennis):
  • Harpagornis: TBA
  • Heath Hen (Tympanuchus cupido cupido): TBA
  • Hoazinavis: TBA
  • Mangaia Swiftlet (Aerodramus manuoi): TBA
  • Ornimegalonyx: TBA
  • Passenger Pigeon: The passenger pigeon or wild pigeon is an recently extinct species of pigeon that was endemic to North America. Its common name is derived from the French word passager, meaning "passing by", due to the huge migratory habits of the species. The last confirmed wild bird is thought to have been shot in 1900. The last captive birds were divided in three groups around the turn of the 20th century, some of which were photographed alive. Martha, thought to be the last passenger pigeon, died on September 1, 1914, at the Cincinnati Zoo. Eradication of the species has been described as one of the greatest and most senseless extinctions induced by humans. In Ark, these birds would be able to block the sky's in huge migratory flocks and will be a food source for some flying creatures, particularly the Argentavis. They would make for a decent food source, and tamed ones would be cute pets, messengers and military pigeons, able to make eggs for kibble, notes and deliver them to other players with incredible flight speed and a military pigeon to invade other player's tribe by attacking their dinosaurs and creatures in a huge devastating flock.
  • Presbyornis: TBA
  • Réunion Night Heron (Nycticorax duboisi):
  • Teratornis: TBA
  • Turtle-jawed Moa-nalo: TBA

Flightless Birds

Moas
  • Moa: TBA
Terror Birds
  • Gastornis: TBA
  • Kelenken: TBA
  • Llallawavis: TBA
  • Titanis: TBA
Ratites
  • Diogenornis:

Fish

  • Haikouichthys: TBA

Jawless Fish

  • Priscomyzon: TBA

Ray-fined Fish

  • Bananogmius: TBA
  • Caproberyx: TBA
  • Chinese Paddlefish (Psephurus gladius): TBA
  • Enchodus: A 3-foot-long Cretaceous fish known as the "saber-toothed herring," Enchodus lived in huge shoals and used its large teeth to bite down on slippery prey like squid and smaller fish. In Ark, these creatures would be a food source for many sea animals, particularly the plesiosaurs, and would provide a decent meal if caught by players.
  • Eomola: TBA
  • Leptolepis: TBA
  • Mene (Mene rhombea): TBA
  • Porcupinefish (Diodon tenuispinus): A porcupinefish from the Ypresian-aged Monte Bolca lagerstatte. Extremly very little is known about this animal. In Ark,
  • Protosphyraena: TBA
  • Xiphactinus: meaning "sword-ray", A large (4.5 to 6 m (15 to 20 feet) long) predatory marine bony fish that lived during the Late Cretaceous. When alive, the fish would have resembled a gargantuan, fanged tarpon (to which it was, however, not related). The species Portheus molossus described by Cope is a junior synonym of Xiphactinus audax. Skeletal remains of Xiphactinus have come from Kansas (where the first Xiphactinus fossil was discovered during the 1850s), and Cretaceous formations all over the East Coast (most notably Georgia, Alabama, North Carolina, and New Jersey) in the United States, as well as Europe, Australia, Canada and Venezuela. In Ark, this big fish would be deadly, fast-moving predators of the deep. When tamed, they would make extremely fast mounts that could hold their own in a fight, but the many giant sea beasts of the oceans would be able to prey on them.

Lobe-finned Fishes

  • Hyneria: TBA
  • Onychodus: TBA
  • Tiktaalik: TBA

Cartilaginous Fishes

Sharks
  • Cladoselache: TBA
  • Helicoprion: TBA
  • Hybodus: TBA
  • Pseudomegachasma: meaning "false megamouth", a filter-feeding shark that was closely related to the modern sand tiger shark. It is known from Cretaceous strata in Russia and the United States, and is the only known planktivorous odontaspid, as well as the oldest known planktivorous elasmobranch. It most likely derived from its closest relative, the piscivorous shark Johnlongia. As its name suggests, it was originally classified under Megachasma, before it was found to be an odontaspid. In Ark, these sharks would probably live in much the same way that the basking shark do today: roaming in the ocean surface while they avoid other nearby ocean predators (Megalodons and Elasmosaurs) and feed on mostly plankton (even though there are no plankton in Ark). Although harmless towards the player and other aquitic creatures nearby, it is only dangerous when provoked or cornered: it will ram the player (once ramed, you be knocked unconscious at underwater, but luckily the shark will not try to eat your body and will lheve you knocked out until you drown) and a raft full of people (other tribes will be pushes off the rift) when cornered.
  • Scapanorhynchus: TBA
  • Squalicorax: TBA
  • Xenacanthus: TBA
Rays, Skates, and Sawfish
Chimaeras
  • Ischyodus: TBA

Invertebrates

  • Euphoberia: TBA
  • Mesolimulus: TBA

Crustaceans

  • Aenigmacaris: TBA
Crabs
  • Avitelmessus: An extinct species of crab that lived during the Late Cretaceous. It is the only species in the genus Avitelmessus and is known from finds in the southeastern United States. The shell of Avitelmessus was about 2.25 inches (5.7 cm) in length and was nearly ovular in shape, with a "rounded outline". The upper surface was marked by "broad, shallow grooves" which formed two attached diamond-like shapes, with the larger one closer to the front. "Subsidiary" grooves came in contact with both sides of the larger diamond. The "fairly blunt" anterior edge of the carapace possessed a small, central rostrum, with orbits on either side. The front legs were modified to become chelipeds, with pincers formed by an upper finger, which was movable, and a lower finger, which was stationary (an extension of the previous leg segment). All limbs were covered by "fine granules". At least one specimen with "color markings" (considered rare among fossil crabs) has been discovered. The colors are described as "a medium background, dark spots and blotches, and light lines". In Ark, these crabs would probably live in much the same way that the Christmas Island red crabs do today: roaming everywhere due to its annual mass migration (of hundreds and millions of crabs) to the sea to lay their eggs in the ocean and feed on berries, rare flowers and seedlings, but will also feed on dead animals (including other Avitelmessus, which shows a cannibalistic behavior). These crabs have virtually no competition for food due to their dominance of the forest floor. The crabs main natural predator are the Titanomyrmas (referencing the yellow crazy ant, which is an invasive species accidentally introduced to Christmas Island and Australia from Africa, is believed to have killed 10–15 million red crabs in recent years) and all predators of the island. Avitelmessus can not be tamed due to its low intelligence, but players will over hunt these crabs for there chitin, which it can be made into cementing paste and other resources that you can make.
Lobsters
  • Hoploparia: A fossil lobster belonging to the family Nephropidae. The type species of this genus is Hoploparia longimana. These epifaunal carnivores lived from the Jurassic to the Paleogene period (from 201.6 to 28.4 Ma). Fossils of this genus have been found sediments of Europe, Argentina, Madagascar, Canada and United States. Very little is known about this animal. In Ark,

Arachnids

Spiders and Tarantulas
  • Arthrolycosa: TBA
  • Mongolarachne:
Scorpions
  • Brontoscorpio: A large scorpion that was discovered in Upper Silurian-aged sandstone from Trimpley, Worcestershire, and the species was described on the basis of an incomplete single free finger of a pedipalp, almost 10 centimetres (3.9 in) long. The complete animal is estimated to be at least 90 centimetres (35 in) long. Its carnivorous diet may have consisted of worms or other arthropods. In Ark, Brontoscorpio will be portrayed as a fully aquatic Pulmonoscorpius (even though this scorpion can swim somehow on the water) and Brontoscorpio will be even more dangerous then its Carboniferous relative. If the player gets stung by the scorpion's stinger, he or she will be knocked out immediately in underwater while you are extremely vulnerable to fight back with the scorpion or even worst getting killed by an Jaekelopterus (Eurypterid) or you will drown to your death. They can be found in the ocean's floor living alongside the eurypterids and will occasional go on to dry land in beaches in small groups for temporarily.
    • Credit for the Brontoscorpio' behavior goes out to BBC's documentary series Walking with Monsters!

Insects

  • Afrapia: TBA
  • Afromaimetsha: TBA
  • Aphthoroblattina: TBA
  • Honeybee (Apis nearctica): TBA
  • Manipulator (Manipulator modificaputis): TBA
  • Palaeovespa: TBA
  • Saurophthirus: TBA

Mollusks

Cephalopods
Octopuses
  • Keuppia: TBA
  • Styletoctopus: TBA
Ammonites
  • Cameroceras: TBA

Extinct Invertebrates

  • Anomalocaris: TBA
  • Hallucigenia: TBA
  • Opabinia: TBA
  • Tamisiocaris: TBA
  • Wiwaxia: TBA

Ark: Scorched Earth Creatures

Cryptids

  • Mngwa: TBA

Mythological Creatures

  • Cactus Cat: TBA
  • Cyclops: TBA
  • Jackalope: TBA
  • Pegasus: TBA
  • Roc: TBA

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