Therizinosaur Dossier

Common Name Therizinosaurus
Group Dinosaurs
Species Therizinosaurus multiensis
Time Late Cretaceous
Diet Herbivore
Temperament Aggressive
PC Release Date Not Yet Released
Tameable Yes
Rideable Yes

I'm not entirely certain how Therizinosaurus Multiensis stays populated on the island. It is surprisingly slow for its size, and is a solitary creature (so no pack to back it up). I suppose the fact its shear power rivals Tyrannosaurus is the only thing that allows this very aggressive medium-sized herbivore to thrive on the island.

The claws of Therizinosaurus are some of the most versatile biological tools I've encountered, as adept at removing trees and foliage from Therizinosaurus' path as they are at piercing the thick shells and hide of the island's most defensive creatures if backed into a fight.


A tamed Therizinosaurus is one of the most versatile mounts a Survivor can have. It can be trained to use its claws brutally or delicately, allowing the rider to primarily harvest the specific kinds of resources that he or she wants. And in combat, these same claws can pierce through the toughest armor. This flexibility more than makes up for its inability to carry the large loads of the islands many herbivorous pack beasts.

— The Dossier

The Therizinosaurus (There-ih-zen-o-sawr-us) is a large sized herbivorous dinosaur found on the Ark.

Wikipedia has a more detailed and comprehensive article on Therizinosaurus





A Therizinosaurus is one of the strangest creatures a survivor will encounter on the island. Although it is built like a Tyrannosaurus or an Allosaurus, the creature is a herbivore, using its scythe-like claws to pull down leafy vegetation for consumption. The massive claws are just as efficient for slashing foes in combat though, intimidating all but the hungriest of predators. The beast is also covered in a thick covering of feathers much like its real life counterpart: Therizinosaurus cheloniformis

Color Scheme and Regions









  • Therizinosaurus was first revealed by Drake on June 27, 2015.
  • The dossier was revealed on September 7, 2015.

Trivia not relevant for the game

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An outdated historical depiction of a turtle-like Therizinosaurus

  • Therizinosaurus is inaccurately depicted as a herbivore, when it, in both real life, is an omnivore.
  • Like Megalodon and Baryonyx, Therizinosaurus is the same size in-game as in real life (9 meters).
  • When its fossils were first found, Therizinosaurus was mistaken for a gigantic turtle that used massive claws to pull seaweed into its mouth. When proven to be a dinosaur, scientists believed it to be a T-Rex sized carnivore that was neither saurischian or ornithischian and used its claws to eviscerate prey. More fossil finds showed the creature to be its current depiction.



Gameplay Images



Patch 253 Cnidaria, Pegomastax, Therizinosaurus, Troodon, Tusoteuthis, & More!

Patch 253 Cnidaria, Pegomastax, Therizinosaurus, Troodon, Tusoteuthis, & More!