Chapter

Basal Ceratopsia

You Hailu and Peter Dodson

in The Dinosauria

Published by University of California Press

Published in print June 2004 | ISBN: 9780520242098
Published online March 2012 | e-ISBN: 9780520941434 | DOI: http://dx.doi.org/10.1525/california/9780520242098.003.0025
Basal Ceratopsia

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Ceratopsia consists of Psittacosauridae and Neoceratopsia. Psittacosauridae is a monogeneric (Psittacosaurus) clade consisting of ten species, while basal Neoceratopsia is formed by eleven genera, with twelve species of basal Neoceratopsia being recognized. This chapter discusses the anatomy, phylogeny, and paleobiology of basal ceratopsians. Basal ceratopsians are small (1–3 m long), bipedal or quadrupedal herbivores. The best preserved and described specimens representing the major subgroups among basal ceratopsians are Psittacosaurus mongoliensis, Archaeoceratops oshimai, Protoceratops andrewsi, and Leptoceratops gracilis.

Keywords: Ceratopsia; Psittacosauridae; Neoceratopsia; basal ceratopsians; Psittacosaurus mongoliensis; Archaeoceratops oshimai; Protoceratops andrewsi; Leptoceratops gracilis

Chapter.  10310 words.  Illustrated.

Subjects: Evolutionary Biology

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