Superorder Batoidea Rank Genus | Phylum Chordata Subclass Elasmobranchii Order Pristiformes | |
Similar Sawfish, Sclerorhynchus, Onchosaurus, Elasmobranchii, Rhombodus | ||
Fossil hunting with the boys part 10 amazing ischyrhiza mira rostral tooth
Ischyrhiza is an extinct genus of cartilaginous fish from the Cretaceous and Paleogene belonging to the primitive Batoidea family Sclerorhynchidae. It was not just restricted to North America, also found in Japan, Bolivia, Chile, Peru and other various places and various fossil specimens are found in the Paleocene North America.
References
Ischyrhiza Wikipedia(Text) CC BY-SA