Wild Ancestor of the Modern-Day Horse

This page is the CodyCross answer for the clue below from All Things Water, Group 1286, Puzzle 2 (Streams and Swamps).

Question is: Wild Ancestor of the Modern-Day Horse

and the answer is: TARPAN

Word Meaning:

TARPAN — An extinct Northern European wild horse, Equus ferus ferus.

Definitions from Wiktionary.