Vascoceras Ammonite Fossil

This image is of a Vascoceras (Paravascoceras) cauvini Chudeau ammonite fossil.  Animal existed in Cretaceous Period. The fossil was found in Damergou Niger Africa.

Displayed at Muséum National D'Historie Naturelle Jardin Des Plantes Paléontologie et Anatomie Comparée in Paris, France (August 2016).

Ptychotrygon triangularis Fossil

This fossil was found in the Carlile Shale Formation of Grant County, South Dakota, USA. He has been carefully extracting the hidden fossil shark teeth.  The fossils date to the Cretaceous Period (Turonian). The picture shows what appears to be a Ptychotrygon triangularis sawfish rostral denticle fossil. Field of view (FOV) is about 3 mm.

Thanks to Kenny for the image.

Info Sources:

http://www.phatfossils.com/species.php?species=Ptychotrygon%20Triangularis

Cantioscyllium decipiens Shark Fossil Tooth

My cousin has been working on some Carlile Shale Formation matrix. It was found in Grant County, South Dakota, USA. He has been carefully extracting the hidden fossil shark teeth.  The fossils date to the Cretaceous Period (Turonian). The picture shows what appears to be a Cantioscyllium decipiens tooth fossil. Field of view (FOV) is about 3 mm.

Thanks to Kenny for the image.

Info Sources:
http://www.chalk.discoveringfossils.co.uk/5%20Cantioscyllium.htm

http://fossilsofnj.com/shark/c_decipiens.htm

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

Extinct Goblin Shark Tooth Fossil

My cousin has been extracting fossils from 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 Scapanorhynchus raphiodon. Field of view (FOV) is about 5 mm.

Thanks to Kenny for the image.

Info Source:
http://en.wikipedia.org/wiki/Scapanorhynchus

http://www.elasmo.com/frameMe.html?file=genera/cretaceous/scapanorhynchus.html&menu=bin/menu_genera-alt.html

Ptychodus whipplei Shark Teeth Fossils

My cousin has been extracting fossils from 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 two Ptychodus whipplei shark teeth fossils.

Thanks to Kenny for the image.

Info Source:
http://oceansofkansas.com/Ptychodus2.html

Fossil Shark Teeth of South Dakota

My cousin recently received some matrix from the Carlile Shale Formation of 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). We have been trying to identify what they are. So far names I am considering are Leptostyrax, Cretalamna (Otodus), and Cretodus.

Thanks to Kenny for images.

Info Sources:
http://www.thefossilforum.com/index.php?/topic/41692-south-dakota-matrixteethclaws/

http://oceansofkansas.com/KS-sharks.html