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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 re ....

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.... characterized by their slender, cylinder-shaped bodies, long snouts with shortened mouths. HEXANCHIFORMES: The Hexanchiformes or cow sharks, comprise of two families. Recognized by their six or seven pairs of gill slits, there sharks can often be found in deep water. The frilled shark (CHLAMYDISELACHUS ANGUINEUS) who's appearance is quite unmistakable due to it's "eel" like appearance, is perhaps one the strangest shark that exist today. FOSSIL RECORD: Shark fossil record is fargmentery at best. Most fossils found so far consist of nothing but teeth in some cases a few vertebra have been found. This is rare due to the fact that sharks have bones ....