WebApr 3, 2010 · Family Hexanchidae - Cow sharks. Ref.. Berg, L.S. 1958. Distribution: Atlantic, Indian, and Pacific Oceans. Most species are deepwater inhabitants of the outer continental shelves and upper continental slopes down to at least 1875 m depth. Gill openings 6 in Hexanchus, 7 in Heptranchias and Notorynchus. WebCow sharks are ovoviviparous, and have a range of items within their diet from large fish, crustaceans, carrion, to other sharks. Cow sharks are considered the most primitive …
Hexanchiformes: Cow Sharks
WebDescription, classification, synonyms of Family Hexanchidae - Cow sharks. Author: Gray, 1851 Field Marks: Cylindrical sharks with 6 or 7 gill slits, subterminal mouth with large, … WebCow sharksare a family, the Hexanchidae, of sharks characterized by an additional pair or pairs of gill slits. Four species are in the three genera Heptranchias, Hexanchus, and Notorynchus,. Cow sharks are considered the most primitive of all the sharks, as their skeletons resemble those of ancient extinct forms, with few modern adaptations. nys odyssey of the mind
Sevengill Cow Shark - Oceans Africa Diving & Whale Watching
Web53 rows · Apr 3, 2010 · Cow sharks are ovoviviparous and lack a yolk-sac placenta. They feed on relatively large marine organisms, including other sharks, rays, bony fish, … The order Hexanchiformes is a very small and primitive order consisting of cow sharks and frilled sharks. These sharks have only 1 dorsal fin, 6-7 gill slits, and no nictitating membrane on the eyes. Cow sharks are fairly large and stocky, while frilled sharks are smaller and have eel-like bodies. The oldest fossils from this order can be dated back to the mid-Jurassic. There are six living species in 4 genera, and 2 families. WebThe meaning of COW SHARK is a shark of the family Hexanchidae; especially : a large shark (Hexanchus griseus) having six gill openings on each side and being widely … magic school bus apples