Paleogene pseudoglyptodont xenarthrans from central Chile and Argentine Patagonia ; American Museum novitates, no. 3536

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dc.contributor.author McKenna, Malcolm C. en_US
dc.contributor.author Wyss, André R. en_US
dc.contributor.author Flynn, John J. (John Joseph), 1955- en_US
dc.date.accessioned 2006-10-24T16:25:56Z
dc.date.available 2006-10-24T16:25:56Z
dc.date.issued 2006 en_US
dc.identifier.uri http://hdl.handle.net/2246/5814
dc.description 18 p. : ill. ; 26 cm. en_US
dc.description Includes bibliographical references (p. 17-18). en_US
dc.description.abstract "Herein we describe a new, large-bodied species of Pseudoglyptodon, a close sloth ally, from volcaniclastic deposits of the Abanico (= Coya-Machalí) Formation of the central Chilean Andean main range. This species, P. chilensis, is a rare element of the Tinguiririca Fauna, on which the recently formalized Tinguirirican South American land mammal 'age' is founded, being known from just two specimens. The holotype of P. chilensis, a partial skull and largely complete mandibles (preserving seemingly complete upper and lower dentitions), is by far the best-preserved specimen referable to Pseudoglyptodon known. As such, this material permits a more refined phylogenetic placement of this enigmatic xenarthran than has been possible previously, with Pseudoglyptodon representing the proximal outgroup to the clade including the most recent common ancestor of Choelepus and Bradypus, plus all its descendants (i.e., crown clade sloths). A fragmentary specimen from Argentina is removed from Glyptatelus and referred to Pseudoglyptodon. Although this specimen is distinct from P. chilensis and other previously recognized species of Pseudoglyptodon, it offers too meager a basis for formally establishing a new name. Finally, phylogenetic definitions of the names Phyllophaga and Tardigrada are proposed. Historically these terms have been used largely interchangeably, but here we advocate linking the latter to the crown clade"--P. [1]. en_US
dc.format.extent 2193659 bytes
dc.format.mimetype application/pdf
dc.language eng en_US
dc.language.iso en_US
dc.publisher New York, NY : American Museum of Natural History en_US
dc.relation.ispartofseries American Museum novitates, no. 3536 en_US
dc.subject.lcc QL1 .A436 no.3536, 2006 en_US
dc.subject.lcsh Pseudoglyptodon chilensis. en_US
dc.subject.lcsh Pseudoglyptodon. en_US
dc.subject.lcsh Xenarthra, Fossil -- Chile -- Tinguiririca River Region. en_US
dc.subject.lcsh Xenarthra, Fossil -- Argentina. en_US
dc.subject.lcsh Mammals, Fossil -- Chile -- Tinguiririca River Region. en_US
dc.subject.lcsh Mammals, Fossil -- Argentina. en_US
dc.subject.lcsh Paleontology -- Paleogene -- Chile -- Tinguiririca River Region. en_US
dc.subject.lcsh Paleontology -- Paleogene -- Argentina. en_US
dc.subject.lcsh Paleontology -- Chile -- Tinguiririca River Region. en_US
dc.subject.lcsh Paleontology -- Argentina. en_US
dc.subject.lcsh Xenarthra -- Phylogeny. en_US
dc.title Paleogene pseudoglyptodont xenarthrans from central Chile and Argentine Patagonia ; American Museum novitates, no. 3536 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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