New material of the Oligocene muroid rodent Nonomys, and its bearing on muroid origins. American Museum novitates ; no. 2712

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dc.contributor.authorEmry, Robert J.en_US
dc.date.accessioned2005-10-06T18:14:52Z
dc.date.available2005-10-06T18:14:52Z
dc.date.issued1981en_US
dc.description14 p. : ill. ; 26 cm.en_US
dc.descriptionIncludes bibliographical references (p. 14).en_US
dc.description.abstract"New material shows that Nonomys simplicidens has the dental formula, and some of the dental characters, of the Cricetidae. These are combined with an hystricomorphous zygomasseteric structure like that in Dipodoidea, i.e., the enlarged foramen for the medial masseter is separated by a lamina of bone from a smaller foramen which transmits the infraorbital nerve and blood vessels, and there is virtually no development of a zygomatic plate. This ambiguous combination of characters is seen also in late Eocene Simimys, which has been classified as a dipodoid and as a muroid. Nonomys and Simimys are interpreted as members of an early radiation of myodont rodents, with derived characters that place them in the Muroidea rather than Dipodoidea, but with a combination of characters that excludes them from any presently defined family"--P. [1].en_US
dc.format.extent6883700 bytes
dc.format.mimetypeapplication/pdf
dc.identifier.urihttp://hdl.handle.net/2246/5320
dc.languageengen_US
dc.language.isoen_US
dc.publisherNew York, N.Y. : American Museum of Natural Historyen_US
dc.relation.ispartofseriesAmerican Museum novitates ; no. 2712en_US
dc.subject.lccQL1 .A436 no.2712, 1981en_US
dc.subject.lcshNonomys simplicidens.en_US
dc.subject.lcshMuridae -- Origin.en_US
dc.subject.lcshRodents, Fossil.en_US
dc.subject.lcshPaleontology -- Oligocene.en_US
dc.titleNew material of the Oligocene muroid rodent Nonomys, and its bearing on muroid origins. American Museum novitates ; no. 2712en_US
dc.typetexten_US

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