文章基本信息

标题：A new Puercan (early Paleocene) hyopsodontid “condylarth” from New Mexico
本地全文：下载
作者：THOMAS E. WILLIAMSON ; ANNE WEIL
期刊名称：Acta Palaeontologica Polonica
印刷版ISSN：0567-7920
电子版ISSN：1732-2421
出版年度：2011
卷号：56
期号：2
页码：247-255
DOI：10.4202/app.2009.0147
语种：English
出版社：Institute of Paleobiology PAS
摘要：Isolated cheek teeth from the late Puercan (early Paleocene) Split Lip Flats local fauna, from the head of Willow Wash, Nacimiento Formation, San Juan Basin, represent a new genus and species of hyopsodontid “condylarth”, Chacomylus sladei. The teeth are small, bunodont, and are remarkable for the enlargement of the protocone, pronounced exodaenodonty, and high degree of attritional wear caused by transverse shearing or grinding. Although C. sladei bears a superficial resemblance to the apheliscine apheliscid Gingerichia, a preliminary phylogenetic analysis confirms that it is a hyopsodontid, closely related to the Puercan hyopsodontids Valenia wilsoni and Litomylus orthronepius.
关键词：Mammalia;Condylartha;Hyopsodontidae;Puercan;Paleocene;Nacimiento Formation;New Mexico