#coahuilasaurus

20 min sketches on paleostream! tried to draw digitally on an empty sketchbook scan:) here is: isotelus rex vibing with small ones, coahuilasaurus rolling you over (you're just a dinosaur egg, without any responsibilities and u don't know what "paying taxes" means), a pair of fona herzogae being fat and affectionate (also explored sexual dimorphism there), and goyocephale being a fancy black chicken it is

here's today's #Paleostream sketches!!! feels good to be back, today we drew Isotelus rex, Coahuilasaurus, Fona, and Goyocephale

(Type specimen of Coahuilasaurus lipani [scale bar = 20 cm], from Longrich et al., 2024)

Meaning of name: Coahuilasaurus = Coahuila lizard [in Greek]; lipani = for the Lipan Apache people

Age: Late Cretaceous (Campanian), around 72.5 million years ago

Where found: Cerro del Pueblo Formation, Coahuila, Mexico

How much is known: Partial skull of one individual. Skull fragments from at least one other individual may also belong to this species.

Notes: Coahuilasaurus was a hadrosaurid (duck-billed dinosaur). The type specimen was formerly considered a specimen of Kritosaurus navajovius, which is otherwise known from the southwestern United States. However, this specimen noticeably differs from Kritosaurus in several ways, such as having a strongly downturned tip of the lower jaw. The authors of a new study thus reclassify it as a new genus and species, and consider it likely more closely related to Gryposaurus. Coahuilasaurus is estimated to have been about 8 m long in total body length.