Simplify the following text for a Grade 8 native English-speaking person.
Original: The aurochs ( or ; also urus , Bos primigenius ) , the ancestor of domestic cattle , was a type of huge wild cattle which inhabited Europe , Asia and North Africa , but is now extinct ; it survived in Europe until 1627 .
Simplified: The Aurochs , or urus , ( Bos primigenius ) was a large species of cattle , once common in Europe but now extinct .