sentences:  Most cite the appearance of an expanding population of human hunters as the cause of its extinction.There are a few late dates of around 8,000 BP and one of 7,000 BP for "Megatherium" remains, but the most recent date viewed as credible is about 10,000 BP.The use of bioclimatic envelope modeling indicates that the area of suitable habitat for "Megatherium" had shrunk and become fragmented by the mid-Holocene.