文章基本信息

标题：Small Oligocene amphicyonids from North America (Paradaphoenus, Mammalia, Carnivora). American Museum novitates ; no. 3331
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作者：Hunt, Robert M., Jr.
期刊名称：American Museum Novitates
印刷版ISSN：0003-0082
电子版ISSN：1937-352X
出版年度：2001
卷号：2001
语种：
出版社：American Museum of Natural History
摘要："North American amphicyonid carnivorans are important members of the mid-Cenozoic terrestrial carnivore community during the late Eocene to late Miocene (Duchesnean to Clarendonian). Species range in size from 200 kg. Among the smallest and rarest amphicyonids are Oligocene species of Paradaphoenus Wortman and Matthew, found at a few localities in the Great Plains and the Pacific Northwest. Paradaphoenus is known from only 10 individuals placed in 3 species (P. minimum; P. tooheyi, n. sp.; P. cuspigerus), representing a single lineage ranging from the Orellan to Arikareean. The existence of three skulls, one with associated mandibles, allows the identification of diagnostic basicranial and dental traits that place the genus in the Amphicyonidae. Basicranial anatomy, including a rudimentary ectotympanic auditory bulla, distinguishes the genus from more abundant small contemporary canids, such as Hesperocyon. The species of Paradaphoenus most likely adopted ecological roles similar to the smaller living foxes"--P. [1].