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Scaloposaurian reptiles from the Triassic of Antarctica. American Museum novitates ; no. 2709

Show simple item record Colbert, Edwin Harris, 1905- en_US Kitching, James William. en_US 2005-10-06T18:16:59Z 2005-10-06T18:16:59Z 1981 en_US
dc.description 22 p. : ill. ; 26 cm. en_US
dc.description Includes bibliographical references (p. 21-22). en_US
dc.description.abstract "Among the theriodont reptiles discovered in the Lower Triassic Fremouw Formation of Antarctica during the austral summer of 1970-1971, are several scaloposaurian skulls, jaws, and parts of postcranial skeletons. Of particular significance are an associated mandibular ramus and pterygoids, as well as the hind limbs of a second specimen, all identified as Ericiolacerta parva, the type of which comes from the Lystrosaurus zone of the Karoo sequence of South Africa. In addition, two new genera and species are described: Pedaeosaurus parvus amd Rhigosaurus glacialis, the former a very small scaloposaurid rather similar to Ericiolacerta, but with a flat skull roof pierced by a pineal foramen and with numerous simple teeth; the latter a comparatively robust form (although small in size) lacking a pineal foramen, with a strong jugal arch, a rather heavy dentary, and enlarged canines followed by a limited number of simple, pointed postcanine teeth. A small maxilla with an associated dentary is included in this paper, although its identity as a scaloposaurian theriodont cannot be verified. It is therefore designated as Theriodontia, incertae sedis. As in the case of previously described tetrapods from the Fremouw Formation, the scaloposaurians show some close resemblances with, and some differences from, fossils in the Lystrosaurus zone fauna of Africa. This is to be expected among two assemblages that had terrestrial connections, yet at the same time were separated by a distance of perhaps 1500 km"--P. [1]. en_US
dc.format.extent 9419512 bytes
dc.format.mimetype application/pdf
dc.language eng en_US
dc.language.iso en_US
dc.publisher New York, N.Y. : American Museum of Natural History en_US
dc.relation.ispartofseries American Museum novitates ; no. 2709 en_US
dc.subject.lcc QL1 .A436 no.2709, 1981 en_US
dc.subject.lcsh Scaloposauridae. en_US
dc.subject.lcsh Reptiles, Fossil -- Antarctica. en_US
dc.subject.lcsh Paleontology -- Triassic -- Antarctica. en_US
dc.subject.lcsh Paleontology -- Antarctica. en_US
dc.title Scaloposaurian reptiles from the Triassic of Antarctica. American Museum novitates ; no. 2709 en_US
dc.type text en_US

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  • American Museum Novitates
    Novitates (Latin for "new acquaintances"), published continuously and numbered consecutively since 1921, are short papers that contain descriptions of new forms and reports in zoology, paleontology, and geology. New numbers are published at irregular intervals.

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