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  2. Stethacanthus - Wikipedia

    en.wikipedia.org/wiki/Stethacanthus

    Stethacanthus is an extinct genus of shark-like cartilaginous fish which lived from the Late Devonian to Late Carboniferous epoch, dying out around 298.9 million years ago. Fossils have been found in Australia, Asia, Europe and North America.

  3. Megalodon - Wikipedia

    en.wikipedia.org/wiki/Megalodon

    The shark was an opportunist and piscivorous, and it would have also gone after smaller fish and other sharks. [52] Many whale bones have been found with deep gashes most likely made by their teeth. [ 28 ] : 75 Various excavations have revealed megalodon teeth lying close to the chewed remains of whales, [ 28 ] : 75 [ 30 ] and sometimes in ...

  4. Sawfish - Wikipedia

    en.wikipedia.org/wiki/Sawfish

    Sawfish, also known as carpenter sharks, are a family of rays characterized by a long, narrow, flattened rostrum, or nose extension, lined with sharp transverse teeth, arranged in a way that resembles a saw. They are among the largest fish, with some species reaching lengths of about 7–7.6 m (23–25 ft). [1]

  5. Hybodontiformes - Wikipedia

    en.wikipedia.org/wiki/Hybodontiformes

    Hybodontiformes, commonly called hybodonts, are an extinct group of shark-like cartilaginous fish (chondrichthyans) which existed from the late Devonian to the Late Cretaceous. Hybodonts share a close common ancestry with modern sharks and rays (Neoselachii) as part of the clade Euselachii. They are distinguished from other chondrichthyans by ...

  6. How can we stop sharks from going extinct? - AOL

    www.aol.com/news/2014-12-18-how-can-we-stop...

    While sharks sit near the top of the food chain in the ocean, their extinction would still have an effect on our life. Without sharks, the ecosystem would be thrown off, triggering changes to the ...

  7. Cosmopolitodus - Wikipedia

    en.wikipedia.org/wiki/Cosmopolitodus

    Cosmopolitodus is an extinct genus of mackerel shark that lived between thirty and one million years ago during the late Oligocene to the Early Pleistocene epochs.Its type species is Cosmopolitodus hastalis, the broad-tooth mako (other common names include the extinct giant mako and broad-tooth white shark).

  8. Portal:Sharks/Selected pictures - Wikipedia

    en.wikipedia.org/.../Portal:Sharks/Selected_pictures

    The selected pictures are what we believe to be the best pictures on Wikipedia related to sharks.Any image that is featured or valued on the English Wikipedia, or featured, valued or considered high quality on Wikimedia Commons, and is used in one or more articles within the scope of WikiProject Sharks, automatically qualifies, and may be added below.

  9. They can be the size of great white sharks and they swim in ...

    www.aol.com/size-great-white-sharks-swim...

    Shark research is hard to get funding for, in part, because sharks aren’t a commercial species. Yet the irony is that they affect commercial species, namely fish populations.

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