The multiple ways in which Homo spaiens 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 increased aesthetic expression in figurines, usually of bone or stone, beautiful wall paintings, and rock carvings, burial techniques, and objects used for personal adornment, and the appearance of articfact styles and trade in exotic items that bespeak the first manifestation of some sort of regional "ethinic" identity that exceeds by a wide margin the local band society--in short, changes that may reflect the "total restructuring" of social relationships. (Patterns in Prehistory)