It does not support models in which the Clovis people were genetic outsiders who replaced an earlier, unrelated founding population without leaving descendants in modern Native American populations.

The Pre-Clovis Debate and Where Anzick Fits

The question of whether people were in the Americas before Clovis — before approximately 13,000 to 14,000 years ago — has been one of the most persistently contentious issues in North American archaeology, and the Anzick genome’s evidence needs to be understood in the context of this ongoing debate.

The evidence for pre-Clovis human presence in the Americas has grown substantially over the past three decades.

Sites like Monte Verde in Chile (approximately 14,500 years old), Meadowcroft Rockshelter in Pennsylvania (with claimed ages older than Clovis), Buttermilk Creek in Texas (with stone artifacts below Clovis-age material), and Bluefish Caves in the Yukon (with cut-marked bones dated to approximately 24,000 years) have collectively built a picture in which people were present in the Americas before Clovis technology appeared.