Forest Tarpan Author: Ghirin   The tarpan (Equus caballus gmelini) was the wild horse of Europe and western Asia. There were two basic types: forest and steppe. The forest tarpan was a bit smaller than its steppe counterpart and darker in color. The tarpan is believed to the ancestor of modern light horse breeds.   The forest tarpan lived in most of Europe, dwelling in the forested areas. It became extinct as farmers converted its habitat to farmland and killed tarpans b