#yamaceratops

[just9art]

A random selection of dinosaurs I felt like drawing, Gnathovorax, Murusraptor, Mantellisaurus, Aardonyx, Huayangosaurus and Yamaceratops. Also images of Murusraptor, Mantellisaurus and Aardonyx on their own.

[a-dinosaur-a-day]

Yamaceratops dorngobiensis

By José Carlos Cortés on @ryuukibart

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Name: Yamaceratops dorngobiensis

Name Meaning: Yama Horned Face

First Described: 2006

Described By: Makovicky & Norell

Classification: Dinosauria, Ornithischia, Genasauria, Neornithischia, Cerapoda, Marginocephalia, Ceratopsia, Neoceratopsia

Yamaceratops is a Neoceratopsian from the Javkhlant Formation of Mongolia, dating back to the Santonian age of the Late Cretaceous, some time between 86 and 83 million years ago. It was an intermediate Neoceratopsian, between basal forms and later derived ones such as the Leptoceratopsid group. The frill may have served as a platform for enlarged jaw muscles, indicating that the evolution of the frill in Neoceratopsians was not solely for display, but rather the divergence between Neoceratopsians and Psittacosaurid-grade Ceratopsians was driven by multiple external stimuli. 

Sources:

Eberth, D. A., Y. Kobayashi, Y-N. Lee, O. Mateus, F. Therrien, D. K. Zelenitsky, M. A. Norell. 2009. Assignment of Yamaceratops dorngobiensis and associated redbeds at Shine Us Khudag (eastern Gobi, Dorngobi Province, Mongolia) to the redescribed Javkhlant Formation (Upper Cretaceous). Journal of Vertebrate Paleontology 29 (1): 295-302. 

Makovicky, P. J., and M. A. Norell. 2006. Yamaceratops dorngobiensis, a New Primitive Ceratopsian (Dinosauria: Ornithischia) from the Cretaceous of Mongolia. American Museum Novitates 3530: 1-42. 

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