Answer:
There are more than 440 described species of sharks. They are grouped in 8 orders listed below from more primitive to the more evolved species.
Hexanchiformes.
Squaliformes.
Pristiophoriformes.
Squatiniformes.
Heterodontiformes.
Orectolobiformes. This order include the whale shark.
Carcharhiniformes. This order include the blue, tiger, grey, bull and the hammerhead sharks among others.
Lamniformes. This order include the great white shark and the mako shark.
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