Part one of term paper
SHARK FAMILIES: There are more then 350 know species of sharks today, which can all be placed under 8 scientific orders that contain 30 families. They are placed into these categories by their shared characteristics, this is called taxonomy. The more closeley related species are placed in another family in the order. SQUAINIFORMES: The ang ...

Part two of term paper
... order has only has one family PHISTOPHORIFORMES which contains five species. These sharks are easy to recongnize due to the fact that they posses an ellongated blade like snout that is lined with sharp teeth along the edges, thus, the name saw sharks. SQUALIFORMES: The order possesses three family which consist of about 82 species. These sharks are characterized by their slender, cylinder-shaped bodies, long snouts with shortened mouths. HEXANCHIFORMES: The Hexanchiformes or cow sharks, co ...