The Black Blastoid

This blastoid takes on a blackish appearance in its photos. Identified as a Pentremites from the Glen Dean Formation of Grayson County, Kentucky. It is dated to the Mississippian Period.

This area is also known for color banded blastoids. See this link for one:
https://twitter.com/Clarkeocrinus/status/478722583790370816/photo/1
https://twitter.com/Clarkeocrinus/status/365284115316088834/photo/1

Turrilites Ammonite

The Turrilites sp. ammonite fossil displayed at the Carnegie Museum of Natural History in Pittsburgh, Pennsylvania (July 2011). The creature swam the Western Interior seas of the Upper Cretaceous (Mesozoic Era).  Its Carnegie museum accession number is CM 7635.

Visit the Carnegie museum web site:  http://www.carnegiemnh.org/

Scaphites nodosus Ammonite

The Scaphites nodosus ammonite fossil displayed at the Carnegie Museum of Natural History in Pittsburgh, Pennsylvania (July 2011). The creature swam the Western Interior seas of the Upper Cretaceous (Mesozoic Era).  Its Carnegie museum accession number is CM 29891.

Visit the Carnegie museum web site:  http://www.carnegiemnh.org/