Notes on Didelphidae (Mammalia, Marsupialia) from the Huayquerian (Pliocene) of Argentina. American Museum novitates ; no. 2559

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dc.contributor.authorSimpson, George Gaylord, 1902-en_US
dc.date.accessioned2005-10-06T18:21:25Z
dc.date.available2005-10-06T18:21:25Z
dc.date.issued1974en_US
dc.description15 p. : ill. ; 26 cm.en_US
dc.descriptionIncludes bibliographical references (p. 15).en_US
dc.description.abstract"Late Tertiary beds in and around the Santa María valley of the Province of Catamarca, Argentina, were long known by the invalid name 'Araucanense' or derivatives therefrom. Thay can now be designated as a sequence of formations, from top to bottom: Corral Quemado, Andalgalá, Chiquimil A, and Chiquimil B. The Corral Quemado and Andalgalá formations are of Huayquerian (Pliocene, perhaps middle Pliocene) age. The age or ages of the Chiquimil are not adequately established. Didelphidae known from the Huayquerian of the Corral Quemado and Andalgalá are identified and a number of specimens described: Didelphis pattersoni, Lutreolina cf. crassicaudata, and ?Sparassocynus species innominata. Those three very different genera represent the reappearance in the known record of varied South American didelphids after a long gap from the Riochican (nominal late Paleocene) during which only a few quite different microbiotheres are known. The inferences are not only that sampling of small fossil mammals is inadequate in South America but also that much, perhaps most, of didelphid evolution was occurring outside the regions of known fossil fields"--P. 3.en_US
dc.format.extent8395615 bytes
dc.format.mimetypeapplication/pdf
dc.identifier.urihttp://hdl.handle.net/2246/5453
dc.languageengen_US
dc.language.isoen_US
dc.publisherNew York, N.Y. : American Museum of Natural Historyen_US
dc.relation.ispartofseriesAmerican Museum novitates ; no. 2559en_US
dc.subject.lccQL1 .A436 no.2559, 1974en_US
dc.subject.lcshOpossums, Fossil -- Argentina -- Catamarca (Province)en_US
dc.subject.lcshDidelphimorphia, Fossil -- Argentina -- Catamarca (Province)en_US
dc.subject.lcshMammals, Fossil -- Argentina -- Catamarca (Province)en_US
dc.subject.lcshPaleontology -- Pliocene -- Argentina -- Catamarca (Province)en_US
dc.subject.lcshPaleontology -- Argentina -- Catamarca (Province)en_US
dc.titleNotes on Didelphidae (Mammalia, Marsupialia) from the Huayquerian (Pliocene) of Argentina. American Museum novitates ; no. 2559en_US
dc.title.alternativeDidelphidaeen_US
dc.typetexten_US

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