Lamniformes

Lamniformes is an order of sharks commonly known as mackerel sharks (which may also refer specifically to the family Lamnidae). It includes some of the most familiar species of sharks, such as the great white shark, as well as more unusual representatives, such as the goblin shark and the megamouth shark. Members of the order are distinguished by possessing two dorsal fins, an anal fin, five gill slits, eyes without nictitating membranes, and a mouth extending behind the eyes. For more information visit the Wikipedia Entry Get back to cartilaginous fishes
Basking shark	Bigeye thresher	Common thresher
†Cretoxyrhina	Crocodile shark	Goblin shark
Great white shark	†Megalodon	Megamouth shark
Pelagic thresher	Portbeagle shark	Salmon shark
Sand tiger shark	†Scapanorhynchus	Shortfin mako shark