CHRONOLOGY

ca. 400,000 BP

  • – Homo sapiens evolve in Africa.

ca. 25,000–14,000 BP

  • – Glaciation exposes the Beringian land bridge.

ca. 15,000 BP

  • – Humans arrive in North America.

ca. 13,500–13,000 BP

  • – Paleo-Indians use Clovis points.

ca. 11,000 BP

  • – Mammoths become extinct.

NOTE: BP is an abbreviation used by archaeologists for “years before the present.”