期刊
ACTA PALAEONTOLOGICA POLONICA
卷 56, 期 2, 页码 247-255出版社
INST PALEOBIOLOGII PAN
DOI: 10.4202/app.2009.0147
关键词
Mammalia; Condylartha; Hyopsodontidae; Puercan; Paleocene; Nacimiento Formation; New Mexico
类别
资金
- National Science Foundation [EAR 0207750, EAR 0207732/EAR 0654096]
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.
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