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An evaluation of jaw suspension in sharks. American Museum novitates ; no. 2706

Show simple item record Maisey, John G. en_US 2005-10-06T18:16:48Z 2005-10-06T18:16:48Z 1980 en_US
dc.description 17 p. : ill. ; 26 cm. en_US
dc.description Includes bibliographical references (p. 15-17) en_US
dc.description.abstract "Evidence and opinions on the nature and diversity of elasmobranch jaw suspension are discussed and the phylogenetic implications of some of these differences are considered. The hyomandibula is attached to the mandibular joint in all living elasmobranchs, and all are therefore hyostylic with respect to the hyomandibula. Amphistyly is a subset or condition of hyostyly rather than an alternative mode of jaw support. Living osteichthyans and perhaps acanthodians are similarly hyostylic, and there is no reason to suppose that this condition is anything but a primitive gnathostome character. Some elasmobranchs have an orbital process which has a consistent relationship to nerves and vessels within the orbit. It is possible to use this relationship systematically to define a group of 'orbitostylic' sharks in a novel way. The orbital process does not seem to correspond to the 'basal articulation' of acanthodians and osteichthyans"--P. [1]. en_US
dc.format.extent 5962605 bytes
dc.format.mimetype application/pdf
dc.language eng en_US
dc.language.iso en_US
dc.publisher New York, N.Y. : American Museum of Natural History en_US
dc.relation.ispartofseries American Museum novitates ; no. 2706 en_US
dc.subject.lcc QL1 .A436 no.2706, 1980 en_US
dc.subject.lcsh Sharks -- Anatomy. en_US
dc.subject.lcsh Jaws. en_US
dc.subject.lcsh Sharks -- Evolution. en_US
dc.subject.lcsh Sharks, Fossil. en_US
dc.subject.lcsh Fishes -- Anatomy. en_US
dc.subject.lcsh Fishes -- Evolution. en_US
dc.title An evaluation of jaw suspension in sharks. American Museum novitates ; no. 2706 en_US
dc.title.alternative Shark jaw suspension 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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