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: Augustynolophus morrisi
| Length*: | 8.8 m | 28.9 ft |
| Weight*: | 3 t | 6,614 lb |
*The largest known specimen
Period
Epoch: Late Cretaceous
Stage: Late Maastrichtian
Years: 72.1–66 Ma
Details
Status: valid
Author: Prieto-Márquez et al.
Year: 2014
Distribution
Area: North America
Country: USA
Region: California
Formation: Moreno
Locations
Sources
Material: Two partial skeletons with fragmentary skulls.
References: PRIETO-MÁRQUEZ, A., WAGNER, J. R., BELL, P. R., & CHIAPPE, L. M. (2014). The late-surviving “duck-billed” dinosaur Augustynolophus from the upper Maastrichtian of western North America and crest evolution in Saurolophini.
