Functional morphology and ontogeny of Keichousaurus hui (Reptilia, Sauropterygia) | Functional morphology of Keichousaurus
1998
Lin, Kebang.
Mots clés AGROVOC
Informations bibliographiques
Fieldiana, Geology, new ser., no. 39
ISSN
0096-2651
Publication (Field Museum of Natural History), 1491
Editeur
Field Museum of Natural History
D'autres materias
Sauropyerygia; Sauropterygia; Keichousaurus hui
Langue
anglais
Format
print
Note
"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-).
Type
Book; Text
Collaborateur
Rieppel, Olivier
Auteur institutionnelle
Field Museum of Natural History.
2023-09-26
MODS
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