Antiquatonia protlockianus Brachiopod

 Antiquatonia protlockianus brachiopod fossil found in the Kewitz Shale (Stanton Formation) of Cass County, Nebraska. Fossil dates to the Pennsylvanian period. Thanks to Mark for the fossil.

Bolis enterogramma Gastropod

Bolis enterogramma gastropod found in the Stone City Formation (Whiskey Bridge) of Brazos County, Texas. Fossils date to the Eocene age.

Reticulariina spinosa Brachiopod

 Reticulariina spinosa brachiopod found in the Hardinsburg Formation of Hart County, Kentucky. Fossil dates to the upper Mississippian Period. Thanks to Mark for the fossil.