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The Phenacolemuridae, new family of early primates. Bulletin of the AMNH ; v. 105, article 5

Show simple item record Simpson, George Gaylord, 1902- en_US 2005-10-05T22:04:59Z 2005-10-05T22:04:59Z 1955 en_US
dc.description p. 415-441, [6] p. of plates : ill. ; 27 cm. en_US
dc.description Includes bibliographical references (p. 440-441). en_US
dc.description.abstract "The Tiffanian through Wasatchian North American genus Phenacolemur represents a highly distinctive group here defined as a family: Phenacolemuridae. The Torrejonian genus Paromomys, although more primitive than Phenacolemur, foreshadows most of its peculiarities and is tentatively placed in the same family. The likewise Torrejonian Palaechthon, although less like Phenacolemur, seems to be related to Paromomys and is still more tentatively referred to the family. Palenochtha and Plesiolestes may possibly also belong in this general group, but are not now referred to it. Phenacolemur, as now known, includes four species: Tiffanian P. frugivorus and P. pagei and Wasatchian P. praecox and P. jepseni. Phenacolemur praecox is heterogeneous, but included taxa cannot be sharply distinguished by available samples. There is some suggestion of distinguishable early populations of larger and later of smaller individuals in the Willwood formation, and these are tentatively redefined as subspecies. There is no evident progressive tendency among the species of Phenacolemur. They represent non-progressive deployment within an early established and specialized generic pattern. The generic pattern of the dentition is characterized especially by a nipping pair of incisors, reduction of other teeth anterior to P[superscript 4][subscript 4], retention and enlargement of P[superscript 4][subscript 4], short, transversely quadrate molar trigonids, great development of a third lobe on M[subscript 3], and development of a talon basin but no hypoconid on M[superscript 1-3]. The Phenacolemuridae represent a sharply distinct special group or line, extinct without issue, and with eclectic resemblances suggesting origin from the same unspecialized ancestry as the Omomyinae, Notharctinae, Plesiadapidae, Necrolemuridae, and others. On this basis, the Phenacolemuridae are considered Primates and Prosimii. The advisability or, indeed, possibility of dividing Paleocene-Eocene Prosimii into Tarsiiformes (or Tarsioidea) and Lemuriformes (or Lemuroidea) is strongly questioned. The Phenacolemuridae are considered one of many divergent, extinct early families that do not properly belong in either of those later Cenozoic groups"--P. 440. en_US
dc.format.extent 8488761 bytes
dc.format.mimetype application/pdf
dc.language eng en_US
dc.language.iso en_US
dc.publisher New York : [American Museum of Natural History] en_US
dc.relation.ispartofseries Bulletin of the American Museum of Natural History ; v. 105, article 5 en_US
dc.subject.lcsh Phenacolemuridae. en_US
dc.subject.lcsh Primates, Fossil -- Rocky Mountains Region. en_US
dc.subject.lcsh Mammals, Fossil -- Rocky Mountains Region. en_US
dc.subject.lcsh Paleontology -- Paleogene -- Rocky Mountains Region. en_US
dc.subject.lcsh Paleontology -- Rocky Mountains Region. en_US
dc.title The Phenacolemuridae, new family of early primates. Bulletin of the AMNH ; v. 105, article 5 en_US
dc.type text en_US

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  • Bulletin of the American Museum of Natural History
    The Bulletin, published continuously since 1881, consists of longer monographic volumes in the field of natural sciences relating to zoology, paleontology, and geology. Current numbers are published at irregular intervals. The Bulletin was originally a place to publish short papers, while longer works appeared in the Memoirs. However, in the 1920s, the Memoirs ceased and the Bulletin series began publishing longer papers. A new series, the Novitates , published short papers describing new forms.

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