Archaeologists working in southern Nevada, 160 km North-east of Las Vegas  found nearly 20 sites used by ancient hunter-gatherer societies dated back 12000 years. These sites revealed a variety of stone points, biface blades, and other artefacts associated with the Paleoarchaic Period, an era ranging from 7,000 to 12,000 years ago.

The sites were found using a technique known as predictive modelling which identifies the common qualities of previously known locations and predicts where similar sites might be waiting to be found. After mapping the land with GIS, aerial photos, and other tools, the researchers pinpointed and then ranked the most promising locations in the study area. The sites included scatterings of fluted and stemmed projectile points fashioned in styles — such as Clovis, Lake Mojave and Silver Lake — that are known to date to the Paleoarchaic epoch in the Great Basin area.

(after Western Digs)