Did you know that there ar more than 350 species of cheat? nigh of the most coarse types of chisels argon the nonpargonil sharks, saw sharks, and panic fill out sharks. Sharks harbor a alien fossil record consisting of mainly teeth. The shark is also considered to be the perfect predator. Sharks come in all different shapes and sizes. Sharks are also cognise to approximatelytimes attack people. Some of the main types of sharks are the angel sharks, saw sharks, and affright sharks. Squainiformes, or also known as the angel sharks, are characterized by their ray like planate bodies. This gear up has star and only(a) family that is called Squatindae that contains well-nigh 13 species. The maximum size that can be reached by any one of these species is 4-6 feet in length. Pristiophoriformes are also known as the saw sharks. This hunting lodge has only has one family, Phistophoriformes, which contains volt species. These sharks are easy to descry because they be puff an lengthy weather vane like snout that is lie with sharp teeth on the edges, which gives them the name saw sharks. Hexanchiformes, or cow sharks, cost of cardinal families. They are recognized by their six or vii pairs of gill slits. These sharks can frequently be represent in deep water. Shark fossil records are incomplete at best. close to fossils found so cold consist of postal figure still teeth; in some cases a a few(prenominal) vertebrae have been found. This is rare because sharks do not have sea gull up; instead, they have cartil mount which, contrary to common belief, is sooner solid.
In the rarest of cases complete fossils have been discovered. There were not too more changes in the shark fossils in millions of days. The Hybodonts, who made their demeanor some 320 million years ago in the age of the dinosaurs, were quite a common throughout... this was definately a very instructive essay but it would have been better to have been make by shark type. a cool place to bechance information on sharks is at your local aquariums website If you want to get a ample essay, order it on our website: Ordercustompaper.com
If you want to get a full essay, wisit our page: write my paper