Paleo-Indians were the first peoples who entered and subsequently inhabited the Americas towards the end of the Late Pleistocene period. The prefix paleo- comes from the Ancient Greek adjective: παλαιός, romanized: palaiós, lit. 'old; ancient'. The term Paleo-Indians applies specifically to the lithic period in the Western Hemisphere and is distinct from the term Paleolithic.
The Paleo-Indians, also known as the Lithic peoples, are the earliest known settlers of the Americas; the period's name, the Lithic stage, derives from the appearance of lithic flaked stone tools.
The Mammut americanum (American mastodon) became extinct around 12,000–9,000 years ago due to human-related activities, climate change, or a combination of both. See Quaternary extinction event and Holocene extinction.
Atlatl weights and carved stone gorgets from Poverty Point
The Paleolithic or Palaeolithic, also called the Old Stone Age, is a period in human prehistory that is distinguished by the original development of stone tools, and which represents almost the entire period of human prehistoric technology. It extends from the earliest known use of stone tools by hominins, c. 3.3 million years ago, to the end of the Pleistocene, c. 11,650 cal BP.
Cave of Altamira and Paleolithic Cave Art of Northern Spain
A skull of early Homo neanderthalensis, Miguelón from the Lower Paleolithic dated to 430,000 BP.
Many giant mammals such as woolly mammoths, woolly rhinoceroses, and cave lions inhabited the mammoth steppe during the Pleistocene.