Authenticated (23/12/2008) by Anne-Camille Souris, Ethologist, member of the SSC/IUCN Equid Specialist Group, and President of Goviin Khulan:
http://www.goviin-khulan.com
Pleistocene: A geological time period from approximately 2 million years ago until 10,000 years ago.
Steppe: A biome (or subdivision of the Earth's surface) that is composed of a swathe of temperate grassland stretching from Romania to China.
Subspecies: A population usually restricted to a geographical area that differs from other populations of the same species, but not to the extent of being classified as a separate species.