| State(s): Nebraska, Nevada, New Mexico, North Dakota, Ohio, Oklahoma |
| |
| Nebraska Lithic Type: |
|
Sheldon, Spring Branch B, Florence, Southbend, Stoner, Winterset B, Bijou Hills Orthoquartzite, Republican River Jasper, Unidentified Fusilinid, Unidentified Jasper, Unidentified Tabular |
| Nevada/New Mexico Lithic Type: | |
Ignimbrite, Sinter/Baldy Hill Jasper |
| North Dakota Lithic Type:: | |
Knife River, Rainy Buttes, Miocene Chert |
| Ohio/Oklahoma Lithic Type: |
| Flint Ridge/Florence A |