Sharks are a separate class of vertebrates from other fish, called cartilaginous fish. In the scientific Class Chondrictyhes, sharks separated from other vertebrates as long as 440 million years ago. […]
Read MoreSharks are a separate class of vertebrates from other fish, called cartilaginous fish. In the scientific Class Chondrictyhes, sharks separated from other vertebrates as long as 440 million years ago. […]
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