Lithic Comparative Collection
Nebraska






















































Colorado


Kansas



















Illinois







Iowa





Tongue River Silicified Sediment














Missouri










South Dakota


Tongue River Silicified Sediment

Tongue River Silicified Sediment




Wyoming








Spanish Diggings Orthoquartzite

Spanish Diggings Orthoquartzite

Spanish Diggings Orthoquartzite
Wisconsin


North Dakota



Tongue River Silicified Sediment



Chadron Formation Basal Conglomeration Silicified Wood
