Isurus Desori Mako Shark Tooth Fossil - Collectors Grade 53mmWith excellent preservation, this Isurus Desori fossil shark tooth is of the highest quality and grade A+ for the esteemed collector detailing authentic enamel from the distal to mesial side edges which are consistent from the root to the apical tip. STAT Genus: Isurus Desori [Extinct Mako Shark] Age: Miocene epoch, 15 million years Origin: Pungo River formation, Herford Co, North Carolina L: 5. 3 CM