
1) Aurochs 2) Bos primigenius 3) European bison 4) Extinct german ox 5) Extinct wild 6) Extinct wild ox 7) Mountain in Peru 8) Shaggy wild ox, now extinct 9) The aurochs 10) The aurochs, extinct wild ox 11) Wild ox 12) Wild ox of yore
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• (n.) A very large, powerful, and savage extinct bovine animal (Bos urus / primigenius) anciently abundant in Europe. It appears to have still existed in the time of Julius Caesar. It had very large horns, and was hardly capable of domestication. Called also, ur, ure, and tur.
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<zoology> A very large, powerful, and savage extinct bovine animal (Bos urus or primigenius) anciently abundant in Europe. It appears to have still existed in the time of Julius Caesar. It had very large horns, and was hardly capable of domestication. Called also, ur, ure, and tur. ... Origin: L.; of Teutonic origin. See Aurochs. ... Source: ...
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http://www.encyclo.co.uk/local/20973

The urus (Bos taurus) was the ancient wild ox of Europe, the ancestor of the existing domesticated forms.
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http://www.probertencyclopaedia.com/browse/BU.HTM
Bos primigenius noun large recently extinct long-horned European wild ox; considered one of the ancestors of domestic cattle
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https://www.encyclo.co.uk/local/20974
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