Mammalia - Artiodactyla - Hypertragulidae
Full reference: E. D. Cope. 1879. Observations on the faunae of the Miocene Tertiaries of Oregon. Bulletin of the United States Geological and Geographical Survey 5(2):55-69
Parent taxon: Hypertraguloidea according to I. A. Vislobokova 2001
See also Carroll 1988, Cook 1934, Ferrusquia-Villafranca 1969, Gregory 1910, Jaekel 1911, Johnson 1966, Lofgren et al. 2020, Matthew 1908 and Scott 1940
Sister taxa: Hypisodontidae, Praetragulidae
Subtaxa: Hypertragulinae Hypertragulus Nanotragulus
Ecology: ground dwelling frugivore
Distribution:
• Miocene of United States (2: Nebraska, Texas collections)
• Harrisonian of United States (14: California, Montana, Nebraska, South Dakota, Texas, Wyoming)
• Arikareean of United States (21: California, Florida, Montana, Nebraska, North Dakota, Oregon, South Dakota, Wyoming)
• Oligocene of United States (63: California, Colorado, Florida, Montana, Nebraska, North Dakota, Oregon, South Dakota, Washington, Wyoming)
• Eocene to Oligocene of Mexico (1)
• Eocene of Mexico (1), United States (7: California, Nebraska, South Dakota, Texas)
Total: 109 collections including 116 occurrences