The multiple ways in which Homo sapiens diverged physically and behaviorally from pre-sapiens forms of Homo in the period between about 300,000 years ago to 30,000 years ago are collectively referred to as the "Middle/Upper Paleolithic transition." This "transition" is visible in many radical changes, such as a shift from generalized hunting patterns to concentrations in some areas on gregarious herd mammals like deer, reindeer, and horses. (Patterns in Prehistory)