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.
Dinosaur: Secernosaurus koerneri

Length*: | 4 m | 13.1 ft |
Weight*: | 360 kg | 794 lb |
*The largest known specimen
Period
Epoch: Late Cretaceous
Stage: Campanian-Maastrichtian
Years: 83.6–66 Ma
Details
Status: valid
Author: Brett-Surman
Year: 1979
Distribution
Area: South America
Country: Argentina
Region: Chubut
Formation: Lago Colhué Huapí
Locations
Sources
Material: Partial skeleton.
References: Prieto-Marquez, A., & Salinas, G. C. (2010). A re-evaluation of Secernosaurus koerneri and Kritosaurus australis (Dinosauria, Hadrosauridae) from the Late Cretaceous of Argentina.