Hyracodontidae

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 22.3 million years.^[2] Hyracodonts have been nicknamed running rhinoceroses^[3][4] due to their long limbs, which made them more specialized for running than any other rhinocerotoid group.^[3]

Phylum:Chordata

Class:Mammalia

Order:Perissodactyla

Superfamily:Rhinocerotoidea

Quick facts Scientific classification, Genera ...

Hyracodonts Temporal range: Ypresian-Chattian, 48.6–26.3 Ma PreꞒ Ꞓ O S D C P T J K Pg N
Hyracodon
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Class:	Mammalia
Order:	Perissodactyla
Superfamily:	Rhinocerotoidea
Family:	†Hyracodontidae Cope, 1879[1]
Genera
†Eggysodontinae? †Hyracodontinae †Ardynia †Epitriplopus †Hyracodon †Ilianodon †Pataecops †Prohyracodon †Rhodopagus? †Triplopides †Ulanodon Possible hyracodonts †Armania †Ephyrachyus †Triplopus †Toxotherium

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The hyracodonts thrived in the rainforests of Kazakhstan, Pakistan, and southwest China, a former coastal region. Fossil evidence also extends their geographical range to Germany, as well as to Mongolia.^[5]