Mammalia - Theriamorpha - Phenacodontidae
Alternative combinations: Ectocion osbornianum, Oligotomus osbornianus
Synonym: Ectocion ralstonensis Granger 1915
Full reference: E. D. Cope. 1882. Contributions to the history of the Vertebrata of the lower Eocene of Wyoming and New Mexico, made during 1881. Proceedings of the American Philosophical Society 20(111):139-197
Belongs to Ectocion according to J. G. M. Thewissen 1990
See also Cope 1882, Delson 1971, Gingerich 1980, Granger 1915, Hay 1902, McKenna 1960, Rose 1981, Rose et al. 2012 and Simpson 1937
Sister taxa: Ectocion cedrus, Ectocion collinus, Ectocion ignotum, Ectocion major, Ectocion mediotuber, Ectocion nanabeensis, Ectocion parvus, Ectocion superstes
Ecology: ground dwelling herbivore
Distribution:
• Eocene of United States (115: Colorado, Wyoming collections)
• Cf2 of United States (2: Wyoming)
• Clarkforkian of United States (143: Colorado, Wyoming)
• Cf3 of United States (2: Wyoming)
• Cf1 of United States (1: Wyoming)
• Paleocene to Eocene of United States (1: Wyoming)
• Paleocene of Canada (1: Alberta), United States (13: Wyoming)
Total: 278 collections including 279 occurrences
Specimen images are retrieved through the ePANDDA API.
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