Equus ferus ferus

This is called the tarpan or the Eurasian wild horse. They were domesticated to create the modern Equus ferus caballus, the riding horse. It is said that the last one died in the Russian empire in 1909.https://www.mindat.org/taxon-7919457.html However, it may be that tarpans were extinct by this time and it was only a hybrid or a wild-looking horse. It seems that they went extinct not just from human hunting and capturing, but genetically through hybridization. As horses escaped or were released into the wild, they bred with the local tarpans and changed their looks, creating more colors and longer hair. Horses were occasionally selected to be given to zoos and other places under the name of "tarpan".https://www.theextinctions.com/articles-1/5wa1nzaq7zveeuawomiqu2n3c6cfdj We don't even know whether they had a mohawk or a short but falling mane. We know of a few colors that they could be, like black dun, but it seems people are still unsure of what they looked like outside of their skeletons. It is entirely possible that the term "tarpan" is used to describe a kind of wild horse that was already (genetically) extinct by the time someone first tried to describe its descendants, which means that tarpan should be applied to either a certain kind of (probably now extinct) feral horse group or to a hybridized group of tarpans. 
== Name ==
An older scientific name for this is Equus gmelini, Antonius 1912. This was named after the Samuel Gottlieb Gmelin who in 1771 brought a Russian group of wild horses to attention. They already had the Equus ferus name however, since 1784 from the Dutch Pieter Boddaert.https://en.wikipedia.org/w/index.php?title=Tarpan&oldid=1169686402
The name Tarpan was taken from Russian which was in turn derived from Kazakh's or Kyrgyz's тарпан (tarpan).https://en.wiktionary.org/w/index.php?title=tarpan&oldid=75824673 Wikipedia suggests that this may have been derived from the Tartar or Cossack takja.
The word "horse" has similar variations throughout Europe. It ultimately derives from words of vehicle and run, fitting for the domesticated horse.https://en.wiktionary.org/w/index.php?title=horse&oldid=76281706
== References ==