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Basicranial anatomy of Herpetotherium (Marsupialia, Didelphimorphia) from the Eocene of Wyoming. American Museum novitates ; no. 3235

Show simple item record Gabbert, Sherri L. en_US 2005-10-06T16:54:57Z 2005-10-06T16:54:57Z 1998 en_US
dc.description 13 p. : ill. ; 26 cm. en_US
dc.description Includes bibliographical references (p. 11-13). en_US
dc.description.abstract "Cranial anatomy of early Tertiary Herpetotherium is described, with an emphasis on the auditory region. The preserved anatomy presents a suite of characters indicating a conservative morphological trend in the ear region. The tympanic cavity floor has a large alisphenoid contribution that resembles the condition seen in Caluromys. No other bony structures from the petrosal or surrounding bones contribute to closure of the tympanic floor, and it is not known how much was contributed by the ectotympanic. The exit for mandibular nerve (V3) through a rostral incisure of the piriform fenestra is most similar to the condition observed in Marmosa and Monodelphis. In general, the anatomy of the ear region observed in Herpetotherium resembles that observed in extant didelphids; however, changes in spatial morphology appear to distinguish taxonomic groups"--P. [1]. en_US
dc.format.extent 2357509 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. 3235 en_US
dc.subject.lcc QL1 .A436 no.3235, 1998 en_US
dc.subject.lcsh Herpetotherium. en_US
dc.subject.lcsh Skull. en_US
dc.subject.lcsh Opossums, Fossil. en_US
dc.subject.lcsh Middle ear -- Evolution. en_US
dc.subject.lcsh Mammals, Fossil -- Wyoming. en_US
dc.subject.lcsh Paleontology -- Eocene -- Wyoming. en_US
dc.subject.lcsh Paleontology -- Wyoming. en_US
dc.title Basicranial anatomy of Herpetotherium (Marsupialia, Didelphimorphia) from the Eocene of Wyoming. American Museum novitates ; no. 3235 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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