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Citation for Study 13189

About Citation title: "Taxonomy, cranial morphology, and relationships of parrot-beaked dinosaurs.".
About Study name: "Taxonomy, cranial morphology, and relationships of parrot-beaked dinosaurs.".
About This study is part of submission 13189 (Status: Published).

Citation

Sereno P.C. 2010. "Taxonomy, cranial morphology, and relationships of parrot-beaked dinosaurs." In: , eds. New Perspectives on Horned Dinosaurs. pp. 21-58. Bloomington, University of Indiana Press.

Authors

  • Sereno P.C.

Abstract

In 1922, well-prserved fossils of the first parrot-beaked dinosaur were discovered in Early Cretaceous horizons in the Gobi Desert of Mongolia. Now referred to a single species, Psittacosaurus mongoliensis, these remains include a growth series from hatchlings to adults. In subsequent years, 15 species have been added to the genus Psittacosaurus and a second genus, Hongshanosaurus, was recently described, all from Early Cretaceous rocks in Asia. Although the second genus and about one-half of the species attributed to Psittacosaurus are potentially invalid, Psittacosaurus remains the most species-rich dinsaurian genus, with interspecific variation concentrated in the skull and dentition. This paper reviews evidence differentiating the named genera and species of psitacosaurs, outlines major cranial changes in a growth series from hatchling to adult in Psittacosaurus mongoliensis, and provides evidence of two species groups within the genus.

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  • Canonical resource URI: http://purl.org/phylo/treebase/phylows/study/TB2:S13189
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