This image is of  Hexanchus griseus (Bonnaterre, 1788) fossil shark teeth on display at Mace Brown Museum of Natural History (August 2017)....

  This image is of fossil teeth on display at Mace Brown Museum of Natural History (August 2017). It was found in Cross Formation, Pregnall ...

This image is of a placoderm (bottom-feeding fish) fossil aka Bothriolepis canadensis (Whiteaves, 1880) on display at Mace Brown Museum of ...