Pelomedusoid side-necked turtles from late Miocene sediments in southwestern Amazonia. American Museum novitates ; no. 3245

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dc.contributor.authorGaffney, Eugene S.en_US
dc.contributor.authorCampbell, Kenneth E., 1943-en_US
dc.contributor.authorWood, Roger Conant.en_US
dc.date.accessioned2005-10-06T16:52:31Z
dc.date.available2005-10-06T16:52:31Z
dc.date.issued1998en_US
dc.description11 p. : ill. ; 26 cm.en_US
dc.descriptionIncludes bibliographical references (p. 10-11).en_US
dc.description.abstract"Fossil turtles have been recovered from outcrops on the Río Purus, Río Acre, and Río Madre de Dios in the southwestern Amazon basin where the borders of Brazil, Peru, and Bolivia converge. The fossils are from two discernible horizons, both probably of late Miocene age and separated by the Ucayali Unconformity. The older horizon is the upper part of the Contamana Group, whereas the younger horizon is Unit A of the Madre de Dios Formation. The Contamana Group has yielded specimens identifiable as Stupendemys, a very large podocnemidid reported from Venezuela and Amazonia, and a new and unnamed taxon of podocnemidid represented only by the lower jaw. It is possible that the lower jaw belongs to Stupendemys, but the absence of any associated specimens prevents this assignment. The younger Madre de Dios horizon also yields Stupendemys, demonstrating that this large turtle lived both before and after the event that gave rise to the Ucayali Unconformity. A cervical attributable to a large species of Podocnemis was found in beds identified as either Unit A or upper Contamana Group"--P. [1].en_US
dc.format.extent2338551 bytes
dc.format.mimetypeapplication/pdf
dc.identifier.urihttp://hdl.handle.net/2246/3172
dc.languageengen_US
dc.language.isoen_US
dc.publisherNew York, NY : American Museum of Natural Historyen_US
dc.relation.ispartofseriesAmerican Museum novitates ; no. 3245en_US
dc.subject.lccQL1 .A436 no.3245, 1998en_US
dc.subject.lcshPelomedusidae -- Amazon River Region.en_US
dc.subject.lcshTurtles, Fossil -- Amazon River Region.en_US
dc.subject.lcshReptiles, Fossil -- Amazon River Region.en_US
dc.subject.lcshPaleontology -- Miocene -- Amazon River Region.en_US
dc.subject.lcshPaleontology -- Amazon River Region.en_US
dc.titlePelomedusoid side-necked turtles from late Miocene sediments in southwestern Amazonia. American Museum novitates ; no. 3245en_US
dc.typetexten_US

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