Basal Ornithopoda

David B. Norman, Hans-Dieter Sues, Lawrence M. Witmer and Rodolfo A. Coria

in The Dinosauria

Published by University of California Press

Published in print June 2004 | ISBN: 9780520242098
Published online March 2012 | e-ISBN: 9780520941434 | DOI:
Basal Ornithopoda

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Ornithopoda is a clade of bipedal and unarmored herbivorous dinosaurs with complex dentitions. It includes the small heterodontosaurids from the Early Jurassic and euornithopods, which range widely in body size and are known from the Middle Jurassic to the end of the Cretaceous. This chapter examines the anatomy, phylogeny, and paleobiology of basal ornithopods. Many of the ornithopods described in this chapter, particularly heterodontosaurids, are among the smallest known ornithischians. Fossil remains of heterodontosaurids are distributed in South Africa, the United States, England and China. Basal euornithopods have been collected from Asia, Australia, Europe, South America, North America, and Antarctica.

Keywords: Ornithopoda; herbivorous dinosaurs; heterodontosaurids; euornithopods; basal ornithopods

Chapter.  15321 words.  Illustrated.

Subjects: Evolutionary Biology

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