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Lythronax is an extinct genus of tyrannosaurid theropod dinosaur that lived around 80.6 to 79.9 million years ago in what is now southern Utah, USA. The generic name is derived from the Greek words lythron meaning "gore" and anax meaning "king". Lythronax was a large-sized, moderately-built, ground-dwelling, bipedal carnivore that could grow up to an estimated 8 meters (26 feet) in length and weighed 2.7 tons (5,500 lbs).

L. argestes is the oldest known tyrannosaurid, based on its stratigraphic position. It is known from a specimen thought to be from a single adult that consists of a mostly complete skull, both pubic bones, a tibia, fibula, and metatarsal II and IV from the left hindlimb, as well as an assortment of other bones. Its skull anatomy indicates that, like TyrannosaurusLythronax had both eyes facing the front, giving it depth perception.

Wikipedia has a more detailed and comprehensive article on Lythronax

Video Games

Jurassic World: Alive

see Lythronax/JW: A

Lythronax appears in the game Jurassic World: Alive. An interesting addition to the Lythronax in the game is that it has fur-like feathers, which its' real life counterpart likely had. This is the first time it has ever appeared in a Jurassic Park video game and the Jurassic Park franchise.

Jurassic World: The Game

see Lythronax/JW: TG

Lythronax appears in Jurassic World: The Game as a tournament creature. An interesting feature to the Lythronax in the game is that it has fur-like feathers, which it likely had in reality.


A Lythronax figure, complete with Capture Gear, is set to appear in the 2022 toy-line based on Jurassic World: Dominion as part of the "Massive Action" assortment. This will be the first time it physically appear in any Jurassic Park toy set.[1]


  • In Jurassic World: The Game, Lythronax is mentioned to be 26 feet (8 meters) tall. This is larger than any known theropod dinosaur and was likely meant to refer to the length of the animal.


  1. 2022'S LINE CHECKLIST! - "Massive Action" Retrieved from http://jptoys.com/index.php/2022/01/13/627-2022-s-line-checklist