06357 - Top Beautiful 1.72 Inch Heliophora orbicularis (Urchin) Upper Pliocene Dinosaur Bones and Claws HALISAURINAE
Yard notes & kiln story
Description
HALISAURINAE
Its size is enormous
Echinoidea - Euechinoidea - Pseudodiadematidae
The fossil history of this class goes back to the Late Cambrian
Type species : Mosasaurus hoffmanni Mantell
06357 - Top Beautiful 1.72 Inch Heliophora orbicularis (Urchin) Upper Pliocene Dinosaur Bones and Claws HALISAURINAEInteresting genus with extremely variable circular to oval shaped test. Beautiful sand dollar urchin.