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Morphology of the auditory region in Paramys copei and other Eocene rodents from North America. American Museum novitates ; no. 3307

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dc.contributor.author Wahlert, John H. en_US
dc.date.accessioned 2005-10-06T16:11:14Z
dc.date.available 2005-10-06T16:11:14Z
dc.date.issued 2000 en_US
dc.identifier.uri http://hdl.handle.net/2246/2009
dc.description 16 p. : ill. ; 26 cm. en_US
dc.description Includes bibliographical references (p. 14-16). en_US
dc.description.abstract The morphology of the external surface of the petrosal and its junction with the basioccipital in Paramys copei is described. Comparison with an outgroup of the Cretaceous Vincelestes and Recent Didelphis and Solenodon reveals that the auditory region retains many primitive features. The Eocene paramyines from North America show only slight differences. Sciuravus is set apart by the lack of a ventral petrosal sinus canal between the petrosal and basioccipital and by the facial nerve and stapedial artery sharing a common foramen in the petrosal. European theridomyids, too, are not as primitive as Paramys but share with it and Sciuravus a ridge on the promontorium that separates the transpromontorial continuation of the internal carotid artery from the origin of the tensor tympani muscle. Twelve characters of the auditory region are analyzed and summarized in a data matrix for use in future studies. Relative primitiveness of the auditory region in all of these Eocene rodents suggests that derived characters in later rodent taxa may represent intraordinal relationships but only homoplasy with nonrodents. en_US
dc.format.extent 166896 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. 3307 en_US
dc.subject.lcc QL1 .A436 no.3307 2000 en_US
dc.subject.lcsh Paramys copei. en_US
dc.subject.lcsh Ear -- Anatomy. en_US
dc.subject.lcsh Skull. en_US
dc.subject.lcsh Auditory pathways. en_US
dc.subject.lcsh Rodents, Fossil -- North America. en_US
dc.subject.lcsh Mammals, Fossil -- North America. en_US
dc.subject.lcsh Paleontology -- Eocene -- North America. en_US
dc.subject.lcsh Paleontology -- North America. en_US
dc.title Morphology of the auditory region in Paramys copei and other Eocene rodents from North America. American Museum novitates ; no. 3307 en_US
dc.title.alternative Auditory region in Paramys copei 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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