Although the evidence of dogs in mesoamerica dates back to Paleoindian times, the oldest remains of domesticated dogs in Middle America are from about 5,000 years ago – from the Abejas phase.
The Belen point is an unfluted, lanceolate-shaped Paleoindian projectile point found in the central Rio Grande Valley of New Mexico.
The Holly Oak Gorget or Holly Oak Pendant is an artifact made from a section of shell that is engraved with the image of an extinct woolly mammoth reportedly found in Holly Oak, Delaware and initially identified as an example of Paleoindian art.
In addition to the Ainu, other present-day hunter-gatherer societies that have remained isolated in northeast Asia and North America and whose ancestors may have contributed to the gene pool of Paleoindian are the Yukaghir, Inuit, Aleut, Koniag, Kamchadal, Chukchi, and Koryak.
It was not until the late 1980s that current PIDBA project director David Anderson began his efforts to compile known instances of Paleoindian projectile points (n=9153 at the time of initial publication in 1990) in eastern North America, and founded the PIDBA project.
As well, he was drawn by the Paleoindian research being performed by Emil Haury.