Riv. Bas, Sur. pats 
Par. No. 31] TIBER RESERVOIR BASIN—MILLER 251 
Another rim sherd indicates that there was also a plain ware. All 
surfaces were smoothed but not polished. There was some rubbing in 
spots, but this does not appear to be uniform. This sherd came from 
a wide-mouthed vessel having a flat and smoothed lip which slanted 
slightly inward (pl. 42, 6). The almost imperceptible inward 
overhang is attributable to an increased thickness of the lip. The 
curvature of the sherd suggests that it was a portion of a hemispher- 
ical-shaped bowl, but we are not positive as to its shape since no other 
portion of the vessel was recovered. 
All sherd material came from a depth ranging from 7.5 to 8.5 feet 
from the present surface and was not plentiful (pl. 39, 6). Thirty- 
three sherds comprise the collection after two seasons work in the field. 
Stone tools were made from obsidian, chalcedony, jasper, chert, and 
some quartzite. Usually the first four materials were reserved for 
projectile points, scrapers, and gouges, while the quartzite forms were 
usually choppers, mauls, or crude hammerstones. 
Projectile points (pl. 48, 1-72, 74) are triangular in outline and 
usually have side-notches with straight bases. Only rarely is a convex- 
based specimen noted. One asymmetrical point (pl. 48, 72) is uni- 
facedly chipped and lacks the usual side notches of the typical 
projectile points. 
Scrapers (pl. 48, 75-23) are small, rhomboidal in outline, and are 
characterized by being planoconvex in cross section. Their ventral 
surfaces consist of the unmodified flake surface, while the dorsal sur- 
faces have been chipped sufficiently to achieve the desired shape. 
Some have a dorsal keel while others have a flatness, depending upon 
the shape and thickness of the initial flake utilized. Most of the end 
scrapers have one or more abruptly retouched edges which are convex 
in outline, but none is sufficiently diagnostic to function as a cultural 
“index fossil.” Specimens vary in length from 18 to 80 mm. and in 
width from 19 to 26 mm. 
Other stone tools were represented by single specimens: A small 
bifacially worked blade of quartzite (pl. 48, 26) and a flint flake with 
two notches chipped into two of its three edges. The latter probably 
functioned as a type of spokeshave. 
A vast majority of the bones occurred as fragments of varying 
sizes. The bones are predominantly bison, with deer next, and trailed 
by elk, antelope, jackrabbit, wolf, and dog. 
Tines from the antlers of both deer and elk were severed from the 
main stalk and functioned as implements. A deer’s tine (pl. 44, 14), 
180 mm. long, has a battered and somewhat polished tip which sug- 
gests its use as a chipping implement. Encircling the implement 
58 mm. to 77 mm. from the base are a series of transverse cuts, suggest- 
ing that an attempt was made to shorten the size of the tool. A well- 
weathered section of an elk’s antler was recovered from Feature 5 at 
