Equus (genus) 54 million years ago (Mya). These animals had three toes on the hind feet and four on the front feet with small hooves in place of claws, but also had soft pads.<ref name="doi10.1126/science.1105458"></ref> Equids developed into larger, three-toed animals (e.g. "Mesohippus") during the Oligocene and Miocene. From there, the side toes became progressively smaller through the Pleistocene until the emergence of the single-toed "Equus". The genus "Equus", which includes all extant equines, is believed to have evolved from "Dinohippus", via the intermediate form "Plesippus". One of the oldest species is "Equus simplicidens", described as zebra-like with a donkey-like head shape.
Hyundai Equus car. The limousine was available only in South Korea and Russia. The Russian version had the same price tag as the South Korean version. It is a concept vehicle customized by Rhys Millen Racing, based on Equus with 4.6 Tau engine. It included bolt-on RMR Signature Edition air intake and stainless exhaust, increased engine power by 30 hp, RMR Signature Edition embroidered headrests and floor mats, and ostrich hide leather seats with suede accents. The vehicle was unveiled in 2010 SEMA show. It is a version of 2011 Equus sedan built by Mummbles Marketing and DUB Magazine. It included Trex