Cow shark

Cow sharks represent a very ancient group of sharks. All species have either 6 or 7 pairs of gills.

COW SHARK
The cow shark (Notorynchus cepedianus), also known as the broadnose sevengill shark, the broad snout shark, the ground shark, and the spotted sevengill shark ,is a distinctive and rare shark that has seven gills (most sharks have five).

HEXANCHIFORMES
cow sharks, frill sharks
NO CURRENT ENTRIES
HETERODONTIFORMES
bullhead sharks, horn sharks ...

Family: Hexanchidae, Cow Sharks view all from this family
Description To 16' (4.8 m). Elongated. Gray. 1 dorsal fin, located far back; pelvic fins far back, near anal fin; tail fin's upper lobe long, swept-back, notched. No fin spines.

Order Hexanchiformes (5 marine species): frill sharks, cow sharks
Order Squaliformes (74 marine species): bramble sharks, sleeper sharks, dogfish sharks
Order Squantiniformes (12 marine species): angel sharks ...

See also: Shark, Whale, Thresher Shark, Bullhead, Whale Shark