Pachypleurosaurs (Reptilia: Sauropterygia) from the lower Muschelkalk, and a review of the Pachypleurosauroidea

Title Variants

Alternative: Pachypleurosaurs

Related Titles

Series: Fieldiana, Geology, new ser., no. 32

Series: Publication (Field Museum of Natural History), 1473

By

Rieppel, Olivier

Lin, Kebang. , joint author

Type

Book

Material

Published material

Publication info

Chicago, Ill, Field Museum of Natural History, c1995

Notes

"Accepted June 1, 1995. Published December 29, 1995."

The type material of all pachypleurosaurs from the lower Muschelkalk is redescribed and pacypleurosaur systematics are reviewed. Three species of lower Muschelkalk pachypleurosaurs are recognized, Anarosaurus pumilio Dames, Anarosaurus heterodontus n. sp., and Dactylosaurus gracilis Guerich. A cladistic analysis based on 50 characters shows Keichousaurus to be the sister-taxon to all other pachypleurosaurs; Dactylosaurus is the sister-taxon to Anarosaurus plus the Serpianosaurus-Neusticosaurus clade; Anarosaurus is the sister-taxon to the Serpianosaurus-Neusticosaurus clade; Serpianosaurus mirigiolensis is the sister-taxon to Neusticosaurus. The genus Neusticosaurus includes four species, N. edwardsii, N. peyeri, N. pusillus, and N. toeplitschi. The stratigraphic and biogeographic relations of pachypleurosaurs indicate that pachypleurosaurs reached the European epicontinental sea (Muschelkalk Basin) by invasion from teh east in Anisian times, and that a faunal interchange was possible between the Muschelkalk Basin and the southern Alpine intraplatform basin facies at least during late Anisian and Ladinian times.

Abstract also in German.

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

Pachypleurosauridae , Pachypleurosauroidea , Paleontology , Silesia, Upper (Poland and Czech Republic) , Triassic

Call Number

QE1 .F4 n.s., no.32

Language

English

Identifiers

DOI: https://doi.org/10.5962/bhl.title.3474
OCLC: 34137065
Wikidata: https://www.wikidata.org/entity/Q51516160