Chondrichthyes: Sharks And Rays - Fish - Encyclopedia Britannica

Tag » When Did Sharks First Appear

• Fossil Shark Basics – Discover Fishes - Florida Museum

• Shark Evolution: A 450 Million Year Timeline | Natural History Museum

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• History Of Sharks | MCC - Micronesian Conservation Coalition

• When Did The First Sharks Appear On Earth? - Wildlife Online

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• The Intriguing History Of Shark Evolution** - This View Of Life

• What Is The Origin Of Sharks? - STRI Research

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• 400 Million Years Of Shark Evolution - ThoughtCo

• Sharks | Smithsonian Ocean