''Subhyracodon'' (Latin: "below" (sub), + Greek: "hyrax" (hyrak = 'shrewmouse'), and "tooth" (odontos, referring to the genus ''Hyracodon'')) is an extinct genus of hornless rhinoceroses. With a length of and a weight estimated of (in ''S. mitis''), it was a tapir-sized herbivore on the plains of early Oligocene South Dakota 33 million years ago (White River Fauna). It coexisted with other perissodactyls such as horses, brontotheres, and chalicotheres. ''Subhyracodon'' had no horns, relying more on its speed to escape from predators, but a species found at Wind Cave National Park had a pair of bony nasal ridges. The genus ''Caenopus'' and species originally referred to as ''Aceratherium'' were synonymized into ''Subhyracodon''.

References

External links

Wind Cave National Park page on ''Subhyracodon''Paleobiology Database query for ''Subhyracodon''
{{Taxonbar, from=Q139803 Eocene rhinoceroses Chattian genus extinctions Oligocene rhinoceroses White River Fauna Oligocene Eocene mammals of North America Oligocene mammals of North America