Parahelicoprion
Encyclopedia
Parahelicoprion is an extinct genus
of eugeneodontid
, shark
-like cartilaginous fish.
Genus
In biology, a genus is a low-level taxonomic rank used in the biological classification of living and fossil organisms, which is an example of definition by genus and differentia...
of eugeneodontid
Eugeneodontida
Eugeneodontida is an extinct and poorly known order of bizarre sharks. They possessed a unique "tooth-whorl" on the symphysis of the lower jaw as well as pectoral fins supported by long radials. The palatoquadrate was either fused to the skull or reduced...
, shark
Shark
Sharks are a type of fish with a full cartilaginous skeleton and a highly streamlined body. The earliest known sharks date from more than 420 million years ago....
-like cartilaginous fish.