Dinosaurs / Cretaceous / Coahuilaceratops

Coahuilaceratops

Cretaceous koh-ah-WEE-luh-SER-uh-tops, “Coahuila horned face”

Coahuilaceratops beside an adult human6.8 m
1 m = 51.9 px

Coahuilaceratops was a massive horned dinosaur that lived in northern Mexico during the Late Cretaceous, approximately 72 million years ago. Named after the state of Coahuila and the Cerro del Pueblo Formation where it was discovered, it reached an estimated length of seven metres and weighed around four to five tonnes. Although known from fragmentary skull and skeletal material, it is famous for possessing brow horn cores of extraordinary thickness and length. 2 metres, making them among the largest known in any horned dinosaur. Coahuilaceratops inhabited lush coastal estuaries near the ancient Western Interior Seaway, feeding on palm fronds, ferns, and flowering plants.

2 metres in length.

Where and when

Coahuilaceratops lived in the Late Cretaceous, from 72.5 to 71.5 million years ago (Campanian-Maastrichtian age). Its remains come from Mexico, in the Cerro del Pueblo Formation.

252 Ma66 Ma72.5 to 71.5 Ma

The numbers

Length 6.8 m (estimates run from 6.5 to 7 m). Mass about 4.2 t. Hip height about 2.2 m. That is 4 human-lengths, or 0.61 of a double-decker bus. These are estimates from partial skeleton; fields marked estimated by the site are length, mass, first ma, last ma, hip height.

Compare Coahuilaceratops with a bus Place on the timeline

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