Cranial foramina and relationships of the Eomyoidea (Rodentia, Geomorpha) : skull and upper teeth of Kansasimys. American Museum novitates ; no. 2645

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dc.contributor.authorWahlert, John H.en_US
dc.date.accessioned2005-10-06T16:44:38Z
dc.date.available2005-10-06T16:44:38Z
dc.date.issued1978en_US
dc.description16 p. : ill. ; 26 cm.en_US
dc.descriptionIncludes bibliographical references (p. 15-16).en_US
dc.description.abstract"Derived characters of the incisive foramen, infraorbital canal, sphenopalatine foramen, transvere canal, sphenopterygoid foramen, carotid canal, and temporal foramina are shared by eomyids and geomyoids (Geomyidae and Heteromyidae). Three of these characters are shared with myoxoids, dipodoids, and muroids. These facts support the hypothesis that eomyids and geomyoids had common ancestry in a stem species from which no other rodent groups are descended. The family Eomyidae is raised to equal rank, Eomyoidea. Likewise, the inclusive infraorder Geomorpha and rodents traditionally considered myomorphs shared unique common ancestry and are placed together in the suborder Myomorpha. Yoderimys and Kansasimys are primitive in the infraorbital canal and lack of interorbital foramen, but Kansasimys shares derived tooth crown morphology with other eomyoids. The skull of Kansasimys is distinguished by large size and by peculiarities of the premaxillary-maxillary suture, temporal-supraorbital crests, and occiput; the teeth resemble those of Adjidaumo"--P. [1].en_US
dc.format.extent5846961 bytes
dc.format.mimetypeapplication/pdf
dc.identifier.urihttp://hdl.handle.net/2246/2961
dc.languageengen_US
dc.language.isoen_US
dc.publisherNew York, N.Y. : American Museum of Natural Historyen_US
dc.relation.ispartofseriesAmerican Museum novitates ; no. 2645en_US
dc.subject.lcshEomyoidea.en_US
dc.subject.lcshKansasimys dubius.en_US
dc.subject.lcshSkull.en_US
dc.subject.lcshTeeth, Fossil.en_US
dc.subject.lcshRodents, Fossil -- West (U.S.)en_US
dc.subject.lcshMammals, Fossil -- West (U.S.)en_US
dc.subject.lcshPaleontology -- Tertiary -- West (U.S.)en_US
dc.subject.lcshPaleontology -- West (U.S.)en_US
dc.subject.lcshRodents -- Phylogeny.en_US
dc.titleCranial foramina and relationships of the Eomyoidea (Rodentia, Geomorpha) : skull and upper teeth of Kansasimys. American Museum novitates ; no. 2645en_US
dc.typetexten_US

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