Full reference: W. B. Scott. 1940. The mammalian fauna of the White River Oligocene; Part 4, Artiodactyla; Part 5, Perissodactyla. Transactions of the American Philosophical Society 28(4):363-746
Parent taxon: Tragulina according to I. A. Vislobokova 2001
See also Colbert 1941 and Scott 1940
Sister taxa: Amphimerycoidea, Lophiomerycidae, Tragulidae, Traguloidea
Subtaxa: Hypertragulidae Hypisodontidae Praetragulidae
Ecology: ground dwelling grazer-browser
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 (22: California, Florida, Mississippi, Montana, Nebraska, North Dakota, Oregon, South Dakota, Wyoming)
• Oligocene of China (1), Mongolia (3), United States (76: California, Colorado, Florida, Montana, Nebraska, North Dakota, Oregon, South Dakota, Washington, Wyoming)
• Eocene to Oligocene of Mexico (1), United States (1: Nebraska)
• Eocene of Mexico (1), Mongolia (2), United States (39: California, Colorado, Montana, Nebraska, New Mexico, South Dakota, Texas, Utah, Wyoming)
Total: 162 collections including 184 occurrences