Mammalia - Perissodactyla - Equidae

Alternative combinations: Astrohippus stocki, Pliohippus stockii

Synonyms: Astrohippus albidens Mooser 1968, Dinohippus albidens Mooser 1968

Belongs to Astrohippus according to T. S. Kelly 1998

Sister taxon: Astrohippus ansae

Type specimens:

• Astrohippus stockii: LACM (CIT) 3576. Its type locality is Yepomera, which is in a Hemphillian terrestrial horizon in Mexico.
• Astrohippus albidens:

Average measurements (in mm): m1 18.8 x 10.8