Did you know that there ar more than 350 species of cheat? to the highest degree of the most common types of sharks atomic number 18 the angel sharks, saw sharks, and dull sharks. Sharks have a strange fossil record make uping of more often than non teeth. The shark is too considered to be the perfect predator. Sharks come in all different shapes and sizes. Sharks are also known to approximatelytimes lash out people. Some of the main types of sharks are the angel sharks, saw sharks, and shake sharks. Squainiformes, or also known as the angel sharks, are characterized by their ray like flattened bodies. This order has genius and only(a) family that is called Squatindae that contains about 13 species. The maximum size that can be reached by any cardinal of these species is 4-6 feet in length. Pristiophoriformes are also known as the saw sharks. This order has only has one family, Phistophoriformes, which contains five species. These sharks are easy to recognize because they have an protracted blade like snout that is lined with sharp teeth along the edges, which gives them the name saw sharks. Hexanchiformes, or cow sharks, greet of two families. They are recognized by their six or seven pairs of gill slits. These sharks can often be range in deep water. Shark fossil records are broken at best. Most fossils found so far consist of postal code still teeth; in some(prenominal) cases a a few(prenominal) vertebrae have been found. This is rare because sharks do not have mug up; instead, they have cartilage which, reverse gear to common belief, is rather solid. In the rarest of cases complete fossils have been discovered. thither were not too more changes in the shark fossils in millions of years. The Hybodonts, who made their appearance some 320 million years ago in the age of the dinosaurs, were quite a common throughout... this was defina tely a very informative essay but it would h! ave been ruin to have been organized by shark type. a tranquil place to find information on sharks is at your local aquariums website If you want to get a ample essay, order it on our website: OrderCustomPaper.com
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