Functional morphology and ontogeny of Keichousaurus hui (Reptilia, Sauropterygia)

Title Variants

Alternative: Functional morphology of Keichousaurus

Related Titles

Series: Fieldiana, Geology, new ser., no. 39

Series: Publication (Field Museum of Natural History), 1491

By

Lin, Kebang.

Rieppel, Olivier
Field Museum of Natural History.

Type

Book

Material

Published material

Publication info

Chicago. Ill, Field Museum of Natural History, 1998

Notes

"Accepted May 23, 1997. Published March 31, 1998."

Keichousaurus hui Young, 1958, from the Middle Triassic of Guizhou, China, is a small sauropterygian reptile. It has a short snout and elongated temporal openings, resembling the European pachypleurosaurid Dactylosaurus. Unlike all other stem-group eosauropterygians, the parietal foramen is displaced anteriorly. The neck is long and flexible. The body is rigid and the bones pachyostotic. There are two or three sacral vertebrae. There is distinct sexual dimorphism, as in Alpine pachypleurosaurids. The broad ulna is autapomorphic for Keichousaurus. The growth of the humerus is highly positively allometric, reflecting the principal role of the forelimb in locomotion. The overall horizontal orientation of the pectoral girdle indicates that Keichousaurus was not a subaquatic flyer. Instead, a drag-based regime was used in locomotion.

Fieldiana series has been published as Geological Series by Field Columbian Museum (1895-1909) and Field Museum of Natural History (1909-1943), and as Fieldiana: Geology by Chicago Natural History Museum (1945-1966) and Field Museum of Natural History (1966-).

Subjects

Development , Keichousaurus hui , Morphology , Paleontology , Sauropterygia , Sauropyerygia , Triassic

Call Number

QE1 .F4 n.s., no.39

Language

English

Identifiers

DOI: https://doi.org/10.5962/bhl.title.5174
NAL: 500 C432G no.39
OCLC: 38919795
Wikidata: https://www.wikidata.org/entity/Q51480630