Preceramic sequences in the el abra rock-shelters, Colombia.
A series of crude stone artifacts, characterized by a trimming mainly of the working edge of a single face of a chert flake or a fragment of a nodule, was excavated in the El Abra rock-shelters, north of Bogotá, Colombia. The tools indicate a cultural complex distinct from others that have been described for the Paleo-Indian of South America.
Hurt
W R
WR
Hammen
T
T
Urrego
G C
GC