The Skeletal Anatomy of the Triassic Protorosaur Dinocephalosaurus orientalis Li, from the Middle Triassic of Guizhou Province, Southern China

Olivier Rieppel; Chun Li; Nicholas C. Fraser

doi:10.1671/0272-4634(2008)28[95:TSAOTT]2.0.CO;2

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Olivier Rieppel,^1,* Chun Li,² Nicholas C. Fraser^3,**

¹aDepartment of Geology, The Field Museum, 1400 S. Lake Shore Drive, Chicago, Illinois 60605, o
²bInstitute of Vertebrate Paleontology and Paleoanthropology (IVPP), Chinese Academy of Sciences, Pos
³cVirginia Museum of Natural History, 1001 Douglas Avenue, Martinsville, Virginia 24112

^**Corresponding author
^**Current address: Keeper Natural Sciences, National Museums Scotland, Chambers Street, Edinburgh EH1 1JF; Nick.fraser@nms.ac.uk

Abstract

The first protorosaur from the Middle Triassic of China, Dinocephalosaurus orientalis Li is known from two specimens: the holotype (an isolated skull in association with the first three cervical vertebrae), and a referred specimen (an almost complete, associated and partially articulated specimen lacking the tail). This material is here described in detail. A complete and amended diagnosis is given for the genus and its only known species. Among protorosaurs, Dinocephalosaurus is the taxon exhibiting the greatest degree of skeletal paedomorphosis, indicating fully aquatic habits.

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Olivier Rieppel, Chun Li, and Nicholas C. Fraser "The Skeletal Anatomy of the Triassic Protorosaur Dinocephalosaurus orientalis Li, from the Middle Triassic of Guizhou Province, Southern China," Journal of Vertebrate Paleontology 28(1), 95-110, (1 March 2008). https://doi.org/10.1671/0272-4634(2008)28[95:TSAOTT]2.0.CO;2

Accepted: 14 July 2007; Published: 1 March 2008

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