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/

Acanthoscaphites nodosus Ammonite

The Acanthoscaphites 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 40625.

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

Keichiosaurus youngi Marine Reptile

Keichiosaurus youngi primitive marine reptile fossil found in Guizhou Province in China. This creature swam during the Lower Triassic. The first fossil of this genus was discovered in 1957. Learn more at Wikipedia.

Keichousaurus hui drawn by Nobu Tamura (2007)
Found on Wikipedia
See more of Nobu Tamura's work at paleoexhibit.blogspot.com

Scale in the next picture is in inches.

Thanks to Mark Palatas for letting me photograph this specimen.