Calcite Filled Platystrophia Brachiopod

These images are of a broken open Platystrophia sp. brachiopod fossil. The picture reveals calcite crystals. This fossil was found in Bullitt County, Kentucky in Ordovician Period rock.

Cretaceous Turritella Fossil

Gastropod fossil called Turritella sp. from the Cretaceous Period (about 70 million years ago). It was found near Tupelo, Mississippi.

Glabrocingulum ellenae Snail Fossils

These Glabrocingulum ellenae gastropod fossils were found in the Coral Ridge Member of the New Providence Formation of Clark County, Indiana.  The three fossils are shown in this post and all are pyritized.  These snails crawled along the seabed during the Mississippian Period.

Thanks to Kenny for the image.