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beaked plant-eater
Coahuilasaurus
Say it like this: “co-wah-WEE-lah-SOR-us”
Coahuilasaurus lipani
Coahuilasaurus ate plants and walked on two or four legs. It lived in the Late Cretaceous. Bones have been found in Mexico.
- When
- Late Cretaceous (Campanian) · roughly 83.6 to 72.2 million years ago
- Named in
- 2024 · Longrich, N. R.; Ramírez-Velasco, A. A.; Kirkland, J.; Bermúdez Torres, A. E.; Serrano-Brañas, C. I.
- Hip height
- Not established
- Length
- 8–9 m · 26–30 ft
- Weight
- 4 tonnes
- Found in
- Mexico · Cerro del Pueblo
- Food and walking
- Herbivore · Two or four legs
- Kind
- beaked plant-eater · Ornithopod
- Family branch
- Saurolophinae
The story in short
In 2024, N. R. Longrich and colleagues published the name Coahuilasaurus. The name means “coahuila lizard.”
It lived in the Late Cretaceous (Campanian), roughly 83.6 to 72.2 million years ago. Finds come from Mexico, including the Cerro del Pueblo Formation. It was a herbivore and could move on two or four legs.
Published estimates put Coahuilasaurus at a length near 8–9 m and a body mass around 4 tonnes.
On the family tree it sits in Saurolophinae, among the ornithopod dinosaurs.
Close relatives
Acristavus
Acristavus gagslarsoni
Late Cretaceous (Campanian) · roughly 83.6 to 72.2 million years ago
Ahshislesaurus
Ahshislesaurus wimani
Late Cretaceous (Campanian) · roughly 83.6 to 72.2 million years ago
Anasazisaurus
Anasazisaurus horneri
Late Cretaceous (Campanian) · roughly 83.6 to 72.2 million years ago