Table 15.26. Raw Materials of Bifaces
| Biface Form | LOCAL | NONLOCAL AND UNKNOWN | Total | ||||||||||||||
| Dakota Orthoquartzite | Morrison Chert | Morrison Orthoquartzite | Unknown Chert | Chalcedony | Washington Pass Chert | Petrified Wood | Unknown Quartzite | ||||||||||
| N | % | N | % | N | % | N | % | N | % | N | % | N | % | N | % | N | |
| Early | 6 | 60.0 | 1 | 10.0 | 2 | 20.0 | 1 | 10.0 | 10 | ||||||||
| Middle | 6 | 75.0 | 1 | 12.5 | 1 | 12.5 | 8 | ||||||||||
| Late/finished | 30 | 71.4 | 3 | 7.1 | 1 | 2.4 | 3 | 7.1 | 3 | 7.1 | 2 | 4.8 | 42 | ||||
| Unknown | 1 | 33.3 | 2 | 66.6 | 3 | ||||||||||||
| Preforms | 9 | 69.2 | 1 | 7.7 | 2 | 15.4 | 1 | 7.7 | 13 | ||||||||
| Point fragments | 8 | 53.3 | 1 | 6.7 | 4 | 26.7 | 1 | 6.7 | 1 | 6.7 | 15 | ||||||
| TOTAL | 60 | 65.9 | 5 | 5.5 | 3 | 3.3 | 6 | 6.6 | 11 | 12.1 | 3 | 3.3 | 2 | 2.2 | 1 | 1.1 | 91 |