AllosauriaAllosauridaeAllosauroideaAverostraAvetheropodaCarnosauriaDinosauriaEusaurischiaLate JurassicNeotheropodaNorth AmericaOrionidesSaurischiaTetanuraeTheropoda

Creosaurus atrox

Every month, 100,000 readers use the Dinosaur Database, but we receive no support from you. Developing and updating the database requires a lot of work. Therefore, as of September 1, 2025, the database will be closed. If you want it to remain open and be updated, please support us via the "Buy us a coffee" button available on every page or via the Support page.


Dinosaur: Creosaurus atrox

Jurassic: 149.2–145 Ma
Type: Theropod

Length*:6.1 m20.0 ft
Weight*:600 kg1,323 lb
ESR: 3 / 4 (estimated size reliability)
*The largest known specimen


Period

Epoch: Late Jurassic
Stage: Tithonian
Years: 149.2–145 Ma

Details

Status: nomen dubium
Author: Marsh
Year: 1878

Distribution

Area: North America
Country: USA
Region: Wyoming
Formation: Morrison


Sources

Material: Partial skeleton with incomplete skull.
References: Mortimer - Theropod database (online).

________________________

If you are interested in Excel Professional version of Dinosaur or Pterosaur Database, write to us


Pterosaur Database