Lystrosaurus from Antarctica. American Museum novitates
44 p. : ill., maps 24 cm. Includes bibliographical references (p. 41-44). "The Lower Triassic therapsid reptile Lystrosaurus, first discovered in Antarctica in 1969, is now known from rather abundant materials collected from the Fremouw Formation at Coalsack Bluff, Graphite Peak, and McGregor a...
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ftamnh:oai:digitallibrary.amnh.org:2246/5462 2023-05-15T14:03:32+02:00 Lystrosaurus from Antarctica. American Museum novitates no. 2535 Colbert, Edwin Harris, 1905- 1974 5067333 bytes application/pdf http://hdl.handle.net/2246/5462 eng en_US eng New York, N.Y. : American Museum of Natural History American Museum novitates no. 2535 http://hdl.handle.net/2246/5462 QL1 .A436 no.2535 1974 Lystrosaurus Reptiles Fossil -- Antarctica Paleontology -- Triassic -- Antarctica Paleontology -- Antarctica text 1974 ftamnh 2022-03-24T06:32:45Z 44 p. : ill., maps 24 cm. Includes bibliographical references (p. 41-44). "The Lower Triassic therapsid reptile Lystrosaurus, first discovered in Antarctica in 1969, is now known from rather abundant materials collected from the Fremouw Formation at Coalsack Bluff, Graphite Peak, and McGregor and Shackleton glaciers, during two field seasons of 1969-1970 and 1970-1971. Two species, L. murrayi and L. curvatus, are identified from portions of skulls, both species having been originally described from South American specimens. The bulk of the Antarctic fossils, consisting of postcranial elements is not specifically identified, but is described and figured. Included are tusks, a stapes, vertebrae, the shoulder girdle and forelimb elements, and the pelvic girdle and hind limb elements. The 31 described species of Lystrosaurus are reviewed, and it is suggested that these probably should be reduced to eight or nine, contained within two evolutionary lines, as propsed by Cluver (1971). These are on the one hand Lystrosaurus curvatus (the most primitive species), L. platyceps, and L. rajurkari, and on the other L. murrayi, L. mccaigi, L. declivis, and L. hedini. Lystrosaurus oviceps may be included with the first of the above-named groups, or it may be an intermediate form. Lystrosaurus weidenreichi, known largely from the postcranial skeleton, is of indeterminate status. The species central to the two lines, L. curvatus and L. murrayi, may represent a primary radiation of the genus through an ancient Gondwanaland. The presence of these two species in Antarctica provides strong evidence for the connection of Antarctica with Africa. Lystrosaurus murrayi in India bolsters the evidence that the Indian peninsula likewise was a part of Gondwanaland. Lystrosaurus murrayi (as well as other species) in China may lend weight to the proposal, advanced by Hurley (1971) and others, that China might have been a portion of the Gondwanaland continent. Alternatively the Chinese forms may have reached eastern Asia by a long migration"--P. [1]-2. Text Antarc* Antarctic Antarctica American Museum of Natural History: AMNH scientific publications Antarctic Coalsack Bluff ENVELOPE(162.417,162.417,-84.233,-84.233) Graphite Peak ENVELOPE(172.750,172.750,-85.050,-85.050) Hurley ENVELOPE(51.350,51.350,-66.283,-66.283) Indian Shackleton The Antarctic |
institution |
Open Polar |
collection |
American Museum of Natural History: AMNH scientific publications |
op_collection_id |
ftamnh |
language |
English |
topic |
QL1 .A436 no.2535 1974 Lystrosaurus Reptiles Fossil -- Antarctica Paleontology -- Triassic -- Antarctica Paleontology -- Antarctica |
spellingShingle |
QL1 .A436 no.2535 1974 Lystrosaurus Reptiles Fossil -- Antarctica Paleontology -- Triassic -- Antarctica Paleontology -- Antarctica Colbert, Edwin Harris, 1905- Lystrosaurus from Antarctica. American Museum novitates |
topic_facet |
QL1 .A436 no.2535 1974 Lystrosaurus Reptiles Fossil -- Antarctica Paleontology -- Triassic -- Antarctica Paleontology -- Antarctica |
description |
44 p. : ill., maps 24 cm. Includes bibliographical references (p. 41-44). "The Lower Triassic therapsid reptile Lystrosaurus, first discovered in Antarctica in 1969, is now known from rather abundant materials collected from the Fremouw Formation at Coalsack Bluff, Graphite Peak, and McGregor and Shackleton glaciers, during two field seasons of 1969-1970 and 1970-1971. Two species, L. murrayi and L. curvatus, are identified from portions of skulls, both species having been originally described from South American specimens. The bulk of the Antarctic fossils, consisting of postcranial elements is not specifically identified, but is described and figured. Included are tusks, a stapes, vertebrae, the shoulder girdle and forelimb elements, and the pelvic girdle and hind limb elements. The 31 described species of Lystrosaurus are reviewed, and it is suggested that these probably should be reduced to eight or nine, contained within two evolutionary lines, as propsed by Cluver (1971). These are on the one hand Lystrosaurus curvatus (the most primitive species), L. platyceps, and L. rajurkari, and on the other L. murrayi, L. mccaigi, L. declivis, and L. hedini. Lystrosaurus oviceps may be included with the first of the above-named groups, or it may be an intermediate form. Lystrosaurus weidenreichi, known largely from the postcranial skeleton, is of indeterminate status. The species central to the two lines, L. curvatus and L. murrayi, may represent a primary radiation of the genus through an ancient Gondwanaland. The presence of these two species in Antarctica provides strong evidence for the connection of Antarctica with Africa. Lystrosaurus murrayi in India bolsters the evidence that the Indian peninsula likewise was a part of Gondwanaland. Lystrosaurus murrayi (as well as other species) in China may lend weight to the proposal, advanced by Hurley (1971) and others, that China might have been a portion of the Gondwanaland continent. Alternatively the Chinese forms may have reached eastern Asia by a long migration"--P. [1]-2. |
format |
Text |
author |
Colbert, Edwin Harris, 1905- |
author_facet |
Colbert, Edwin Harris, 1905- |
author_sort |
Colbert, Edwin Harris, 1905- |
title |
Lystrosaurus from Antarctica. American Museum novitates |
title_short |
Lystrosaurus from Antarctica. American Museum novitates |
title_full |
Lystrosaurus from Antarctica. American Museum novitates |
title_fullStr |
Lystrosaurus from Antarctica. American Museum novitates |
title_full_unstemmed |
Lystrosaurus from Antarctica. American Museum novitates |
title_sort |
lystrosaurus from antarctica. american museum novitates |
publisher |
New York, N.Y. : American Museum of Natural History |
publishDate |
1974 |
url |
http://hdl.handle.net/2246/5462 |
long_lat |
ENVELOPE(162.417,162.417,-84.233,-84.233) ENVELOPE(172.750,172.750,-85.050,-85.050) ENVELOPE(51.350,51.350,-66.283,-66.283) |
geographic |
Antarctic Coalsack Bluff Graphite Peak Hurley Indian Shackleton The Antarctic |
geographic_facet |
Antarctic Coalsack Bluff Graphite Peak Hurley Indian Shackleton The Antarctic |
genre |
Antarc* Antarctic Antarctica |
genre_facet |
Antarc* Antarctic Antarctica |
op_relation |
American Museum novitates no. 2535 http://hdl.handle.net/2246/5462 |
_version_ |
1766274227922534400 |