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...

I visited the American Museum of Natural History (AMNH) in New York city this month. It is a massive museum that I could not see in one d...