Prehistoric rhinoceroses

The Hyracodontidae are an extinct family of rhinocerotoids endemic to North America, Europe, and Asia during the Eocene through early Oligocene, living from 48.6 to 26.3 million years ago (Mya), existing about .

Aceratheriinae (from Ancient Greek ἀ- (á-), meaning "-less", κέρας (kéras), meaning "horn", and θηρίον (theríon), meaning "beast") is an extinct subfamily of true rhinoceroses (Rhinocerotidae) that ranged across Eurasia, Africa and North America from the Oligocene to the beginning of the Pliocene. Members of the group generally lacked horns, though some members of the family may have borne small horns.

Hispanotherium is an extinct genus of rhinocerotid of the tribe Elasmotheriini endemic to Europe and Asia during the Miocene living from 16 to 7.25 mya existing for approximately .

thumb|left|Life restoration Cadurcodon is an extinct genus of amynodont that lived during the Late Eocene to the Oligocene period. Fossils have been found throughout Mongolia and China. It may have sported a tapir-like proboscis due to the distinct features found in fossil skulls.

Ronzotherium is an extinct genus of perissodactyl mammal from the family Rhinocerotidae. The name derives from the hill of 'Ronzon', the French locality near Le Puy-en-Velay at which it was first discovered, and the Greek suffix 'therium' meaning 'beast'. At present 5 species have been identified from several localities in Europe and Asia, spanning the Late Eocene to Upper Oligocene (37 - 23 million years ago).

Parelasmotherium is an extinct genus of rhinocerotids that lived in Northern China about 11.1 million years ago in the Late Miocene. With its large body and its hypsodont grazing teeth, it belonged to the subfamily Elasmotheriinae and was a relative of the later Elasmotherium, which was widespread over large parts of northern Asia in the Pleistocene.