A positive reaction to deer antiserum is obtained with all members of the Cervidae.
The microblade core, as described above, also reacted with deer antiserum. These results may indicate any member of the Ursidae, including grizzly (Ursus horribilis) or black bear (Ursus americanus), or may indicate multiple uses for the tool.
Positive reactions to rabbit (Lagomorpha) antiserum were obtained on a retouched flake from DEL-166 and a microblade core and biface fragment from DEL-168.
One positive reaction to mouse (Rodentia) antiserum was obtained on a flake burin from DEL-168.
A positive reaction to sturgeon antiserum was obtained on one microblade core from DEL-166.