This Brevispirifer gregarius (Clapp, 1857) is almost a textbook example of a fossil specimen. Included with this posts ar...

This fossil brachiopod is one of the larger ones I have found from the Mississippian Period. It was found in Indiana and shows evidence o...

Astylospongia praemorsa sponge fossil found in the Silurian Period Waldron Shale of Indiana. Illustrations used in the posting are from ...