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

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dc.contributor.authorMcKenna, Malcolm C.en_US
dc.contributor.authorWyss, André R.en_US
dc.contributor.authorFlynn, John J. (John Joseph), 1955-en_US
dc.date.accessioned2006-10-24T16:25:56Z
dc.date.available2006-10-24T16:25:56Z
dc.date.issued2006en_US
dc.description18 p. : ill. ; 26 cm.en_US
dc.descriptionIncludes bibliographical references (p. 17-18).en_US
dc.description.abstractHerein we describe a new, large-bodied species of Pseudoglyptodon, a close sloth ally, from volcaniclastic deposits of the Abanico (= Coya-MachalĂ­) 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.en_US
dc.format.extent2193659 bytes
dc.format.mimetypeapplication/pdf
dc.identifier.urihttp://hdl.handle.net/2246/5814
dc.languageengen_US
dc.language.isoen_US
dc.publisherNew York, NY : American Museum of Natural Historyen_US
dc.relation.ispartofseriesAmerican Museum novitates, no. 3536en_US
dc.subject.lccQL1 .A436 no.3536 2006en_US
dc.subject.lcshPseudoglyptodon chilensis.en_US
dc.subject.lcshPseudoglyptodon.en_US
dc.subject.lcshXenarthra, Fossil -- Chile -- Tinguiririca River Region.en_US
dc.subject.lcshXenarthra, Fossil -- Argentina.en_US
dc.subject.lcshMammals, Fossil -- Chile -- Tinguiririca River Region.en_US
dc.subject.lcshMammals, Fossil -- Argentina.en_US
dc.subject.lcshPaleontology -- Paleogene -- Chile -- Tinguiririca River Region.en_US
dc.subject.lcshPaleontology -- Paleogene -- Argentina.en_US
dc.subject.lcshPaleontology -- Chile -- Tinguiririca River Region.en_US
dc.subject.lcshPaleontology -- Argentina.en_US
dc.subject.lcshXenarthra -- Phylogeny.en_US
dc.titlePaleogene pseudoglyptodont xenarthrans from central Chile and Argentine Patagonia ; American Museum novitates, no. 3536en_US
dc.typetexten_US

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