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Lithics Home | Counties A-Z | Geologic Systems | Lithic Types | Chert Drawers | Lithics Program   Drawer # 8 System(s): Pennsylvanian   Lithic Type:   Ervine Creek, Hertha Top, Bottom County(s):   Pottawattamie Lithic Type:   Hertha County(s):   Union Lithic Type:   Plattsmouth County(s):   Mills, Montgomery Lithic Type:   Raytown County(s):   Madison Lthic Type:   Sheldon County(s):   Mills Lthic Type:   Spring Branch (Lower, Upper, A) County(s):   Mills Lthic Type:   Spring Branch County(s):   Montgomery   (Rear) Hertha Union Co. UN-A1   Hertha Union Co. UN-A1+   Spring Branch (Lower) Mills Co. ML-A1 Spring Branch (Lower) Mills Co. ML-A1+ Hertha (bottom) Pottawattamie Co. PW-A2+ Plattsmouth Mills Co. ML-B   Sheldon Mills Co. ML-E2+   Spring Branch (Upper) Mills Co. ML-A2 Hertha (bottom) Pottawattamie Co. PW-A2 Plattsmouth Mills Co. ML-B+   Sheldon Mills Co. ML-E2   Spring Branch (Upper) Mills Co. ML-A2+ Hertha (top) Pottawattamie Co. PW-A1+   Plattsmouth Montgomery Co. MM-A1   Raytown Madison Co. MD-F+   Spring Branch A Mills Co. ML-D   Hertha (top) Pottawattamie Co. PW-A1   Plattsmouth Montgomery Co. MM-A1+   Raytown Madison Co. MD-F   Spring Branch A Mills Co. ML-D+   Ervine Creek Pottawattamie Co. PW-C2+   Plattsmouth Montgomery Co. MM-A2   Plattsmouth Montgomery Co. MM-A2+   Spring Branch Montgomery Co. MM-A3     (Front) Updated by Tricia R. Bender, Web Designer Mary De La Garza, Web Master Click here to go back to the OSA homepage. Click here to go to The University of Iowa website.