Myliobatus Eagle Ray Toothplate Fossils

These images are of Myliobatus striatus? (Eagle Ray) fossils on display at Mace Brown Museum of Natural History (August 2017). They date to the Eocene Epoch (about 50-45 million years ago), Paleogene Period. The fossil was found in Santee Quarry, Harleyville, South Carolina USA.

The Mace Brown Museum of Natural History is located at the College of Charleston, 202 Calhoun Street, 2nd Floor, Charleston, South Carolina 29424.

Learn more at their blog: http://blogs.cofc.edu/macebrownmuseum/

 

Xiphactinus Sword Ray Fin Fossil Cast

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. Fossil dates to the Late Cretaceous Period (85 million years ago).

Fossil on display at American Museum of Natural History in New York City USA as of July 2018.

Image below is a composite of 3 pictures.

Ptychodus whipple Stingray Fossil Teeth

This image is of Ptychodus whipple fossil ancestral stingray teeth on display at Mace Brown Museum of Natural History (August 2017). They date to the Campanian Age (about 80 million years ago), Late Cretaceous Period. The fossils were found in the Eagle Ford Shale Grayson County Texas USA.

The Mace Brown Museum of Natural History is located at the College of Charleston, 202 Calhoun Street, 2nd Floor, Charleston, South Carolina 29424.

Learn more at their blog: http://blogs.cofc.edu/macebrownmuseum/

Brachyrizodus (Pseudohypoluphus) Fossil Tooth

My cousin has been analyzing some Carlile Shale Formation matrix. It was found in Grant County, South Dakota, USA. He has been carefully breaking it down to extract the hidden fossil shark teeth.  The fossils date to the Cretaceous Period (Turonian). The picture shows what appears to be a Brachyrizodus (Pseudohypoluphus) sp. tooth fossil. Field of view (FOV) is about 3 mm.

Thanks to Kenny for the image.

Info:
http://oceansofkansas.com/ks-sharks.html

Iansan beurleni Ray or Guitarfish-like Fossil

The sea ray or guitarfish-like fossil pictured is an Iansan beurleni found in the Santana Formation of Brazil. It dates back 100 million years ago (Lower Cretaceous Period). This fossil might also be known by the name Rhinobatos beurleni (1968) as seen on the Henskens Fossils web site. Refer to 1996 paper on subject The new genus Iansan (Chondrichthyes, Rhinobatoidea) from the Early Cretaceous of Brazil and its phylogenetic relationships by Paulo M. Brito and Bernard Seret.

The fossil is part of the Cincinnati Museum Center collection (accession number VP7189). It was gift to the museum from Charles Fleischmann.

Fossil on display at Cincinnati Museum of Natural History & Science as of August 2013.