Paleo-Indians

The Clovis people belong to the Early Paleoindian period.  Paleo means "old."  These paleoindians arrived in the Americas on foot at the end of the period of history known as the Pleistocene.  They crossed Beringia from Asia, traversing from the "old world" to the "new world."  At that time, what is now the Bering Strait was a landmass 1,000 miles across at its widest.  Once reaching what it now Alaska, these paleoindians either traveled south along the coastal route or east along rivers and through mountain passes.  All along this journey to the new world, the paleoindians encountered multitudes of animal species, including many species of megafauna (animals over 100 lbs.).  These exotic animals all became extinct shortly after the arrival of the paleoindians.  Did these early humans hunt these animals to extinction?