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Jurassic Park Institute Artwork

Name meaning

"Scythe lizard"




15-20 feet (4.6-6.1 meters)


40 feet (12.2 meters)


4-7 tons (8,000-14,000 pounds)


Asia (Mongolia)


Isla Sorna

Birth type


Movie canon appearances

Jurassic World (Hybrid use only)[1]

Game appearances

Jurassic Park III: Park Builder

Trading card appearances

Inkworks Jurassic Park III Premium Trading Cards

Template Source

Therizinosaurus was a genus of the Therizinosaurid family. The T. cheloniformis species measuring perhaps 40 ft long and 22 ft high.

It's appearance has been a debate until recent decades. During the early phases of its discovery, it was assumed it was a species of a aquatic turtle. After several examinations and revisions, it was given the description of a gigantic carnosaur that measured 55 ft in length. After the discovery of related species Nothronychus, the debate over its appearance ended. It is uncertain what it ate, though, scientists agree that it was not an exclusive carnivore. The theories are it was an insectivore, herbivore, or even an omnivore.

Dinosaur researchers Florence and Charlie Magovern discovered two 18-inch-long fossilized eggs in the Xixia Basin in Nanyang, China. These are perhaps the largest eggs of any animal ever found. Painstaking study of one egg throughout 1995 by the Magoverns and others revealed the bones of a tiny theropod, possibly a therizinosaur, an herbivore about which little is known. The fossil baby was named "Baby Louie" after photographer Louie Psihoyes.[2]

Wikipedia has a more detailed and comprehensive article on Therizinosaurus

Therizinosaurus itself doesn't appear in the movies, although it's DNA was used in Indominus rex in Jurassic World.[1]

Therizinosaurus can be created in the game Jurassic Park III: Park Builder.

Therizinosaurus is an enemy in the Game Gear adaption of The Lost World: Jurassic Park. It is depicted as a burrowing animal.

At card nr. 54 of the Inkworks Jurassic Park III Premium Trading Cards series, a discovery of dinosaur eggs is told (see quote in the real-life section). The eggs might be of a Therizinosaurus.



  1. 1.0 1.1 WIRED - Creating Jurassic World’s New Genetically Modified Dinosaur (June 12, 2015)
  2. Inkworks Jurassic Park III Premium Trading Cards #54.

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