This is the skull and jaws of a  Struthiomimus altus  dinosaur fossil. This animal resembled a modern ground bird and classified as a orn...

This is a cast of sword ray pectoral fin of a Xiphactinus audax . It was collected by M. Triebold in 1993 at Lane County Kansas USA. Foss...

The spine fossil of a Gyracanthus formosus fish (front pectoral fin). Not much is known about this fish as all that is found of rema...