Auditory features and affinities of the Eocene bats Icaronycteris and Palaeochiropteryx (Microchiroptera, incertae sedis) / Michael J. Novacek. American Museum novitates ; no. 2877

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dc.contributor.authorNovacek, Michael J.en_US
dc.date.accessioned2005-10-06T18:09:27Z
dc.date.available2005-10-06T18:09:27Z
dc.date.issued1987en_US
dc.description18 p. : ill. ; 26 cm.en_US
dc.descriptionIncludes bibliographical references (p. 17-18).en_US
dc.description.abstract"The earliest known bats are skeletons of Icaronycteris index from the early Eocene of western Wyoming and a few less well-represented species from the early Eocene of France. Also known are Palaeochiropteryx tupaiodon and several other species from the middle Eocene of western Germany. These taxa have been regarded as primitive forms, either 'ancestral' to echolocating microchiropterans or 'ancestral' to both micro- and megachiropterans. Details of basicranial structure suggest that these Eocene forms were, however, specialized echolocators comparable to Recent microchiropterans. Moreover, quantitative analysis reveals that the Eocene bats have a more pronounced expansion of the cochlea than many Recent microchiropteran species. There is clear justification for reference of Icaronycteris and Palaeochiropteryx to the Microchiroptera. Conversely, there is no reason to recognize a 'primitive-ancestral' group, Eochiroptera, that is excluded from Microchiroptera or Megachiroptera. The relationships of Icaronycteris and Palaeochiropteryx within Microchiroptera remain uncertain. Association of these taxa and several other Eocene forms within the microchiropteran superfamily Palaeochiropterygoidea fails to clarify these relationships. Palaeochiropterygoidea has not been defined by derived characters, and Icaronycteris and Palaeochiropteryx are more accurately designated Microchiroptera incertae sedis. Several primitive features shown by Icaronycteris suggest that the development of a sophisticated system for echolocation within Microchiroptera occurred earlier than certain modifications of the postcranial skeleton"--P. [1].en_US
dc.format.extent4975746 bytes
dc.format.mimetypeapplication/pdf
dc.identifier.urihttp://hdl.handle.net/2246/5207
dc.languageengen_US
dc.language.isoen_US
dc.publisherNew York, N.Y. : American Museum of Natural Historyen_US
dc.relation.ispartofseriesAmerican Museum novitates ; no. 2877en_US
dc.subject.lccQL1 .A436 no.2877, 1987en_US
dc.subject.lcshIcaronycteris.en_US
dc.subject.lcshPalaeochiropteryx.en_US
dc.subject.lcshEar -- Anatomy.en_US
dc.subject.lcshAuditory pathways.en_US
dc.subject.lcshEcholocation (Physiology)en_US
dc.subject.lcshBats, Fossil.en_US
dc.subject.lcshPaleontology -- Eocene.en_US
dc.subject.lcshMicrochiroptera -- Evolution.en_US
dc.subject.lcshBats -- Phylogeny.en_US
dc.titleAuditory features and affinities of the Eocene bats Icaronycteris and Palaeochiropteryx (Microchiroptera, incertae sedis) / Michael J. Novacek. American Museum novitates ; no. 2877en_US
dc.title.alternativeEocene bat earsen_US
dc.typetexten_US

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