Ignacius graybullianus Brown & Rose, 1976
Systematics: Mammalia Boreoeutheria Euarchontoglires Euarchonta Plesiadapiformes Paromomyidae
Size: 60 cm long
Type Horizon and Locality: Early Eocene, Willwood Formation (Wasatchian), Wyoming, US
Type Specimen: A maxilla
The Paromomyids are a family of small rodent-like early primates. They were once thought to be gliding animals closely related to colugos, but that hypothesis is no longer considered to be correct. Paromomyidae were typically small but Ignacius graybullianus, known from relatively complete skeletons, appears to be one of the largest of its kind.
October 7, 2018
References:
Kay, R. F., Thewissen, J. G. M., & Yoder, A. D. (1992). Cranial anatomy of Ignacius graybullianus and the affinities of the Plesiadapiformes. American Journal of Physical Anthropology, 89(4), 477-498.
Bloch, J. I., & Silcox, M. T. (2001). New basicrania of Paleocene‐Eocene Ignacius: re‐evaluation of the plesiadapiform‐dermopteran link. American Journal of Physical Anthropology: The Official Publication of the American Association of Physical Anthropologists, 116(3), 184-198.
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