Cranial osteology of Haplocheirus sollers Choiniere et al., 2010 (Theropoda, Alvarezsauroidea)

Title Variants

Alternative: Haplocheirus sollers

Related Titles

Series: American Museum novitates, no. 3816

By

Choiniere, Jonah N.

Clark, James Matthew, 1956-
Norell, Mark A.
Xu, Xing, 1969-

Type

Book

Material

Published material

Publication info

New York, NY, American Museum of Natural History, [2014]

Notes

Caption title.

"October 22, 2014."

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The basalmost alvarezsauroid Haplocheirus sollers is known from a single specimen collected in Upper Jurassic (Oxfordian) beds of the Shishugou Formation in northwestern China. Haplocheirus provides important data about the plesiomorphic morphology of the theropod group Alvarezsauroidea, whose derived members possess numerous skeletal autapomorphies. We present here a detailed description of the cranial anatomy of Haplocheirus. These data are important for understanding cranial evolution in Alvarezsauroidea because other basal members of the clade lack cranial material entirely and because derived parvicursorine alvarezsauroids have cranial features shared exclusively with members of Avialae that have been interpreted as synapomorphies in some analyses. We discuss the implications of this anatomy for cranial evolution within Alvarezsauroidea and at the base of Maniraptora.

Subjects

Alvarezsauroidea , Anatomy , China , Dinosaurs , Evolution , Haplocheirus sollers , Jurassic , Paleontology , Phylogeny , Reptiles , Reptiles, Fossil , Shishugou Formation (China) , Skull , Xinjiang Uygur Zizhiqu

Call Number

QL1 .A436 no.3816 2014

Language

English

Identifiers

OCLC: 893501075