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Otodus megalodon (/ ˈ m ɛ ɡ əl ə d ɒ n / MEG-əl-ə-don; meaning "big tooth"), commonly known as megalodon, is an extinct species of giant mackerel shark that lived approximately 23 to 3.6 million years ago (Mya), from the Early Miocene to the Early Pliocene epochs.
One of the most striking fossils around today are the teeth and reconstructed jaws of the megalodon.The jaws of the extinct shark are so big, one or two people can stand inside them. They're ...
Meg 2: The Trench hits theaters this week with a larger-than-life depiction of the megalodon. Here’s what we actually know about the beast, according to scientists.
At the beginning of the Late Cretaceous, the Ichthyosauria became extinct; perhaps a plesiosaur group evolved to fill their niches: the Polycotylidae, which had short necks and peculiarly elongated heads with narrow snouts. During the Late Cretaceous, the elasmosaurids still had many species.
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explain why particular groups of organisms died out and why others survived; provide mechanisms that are strong enough to cause a mass extinction but not a total extinction; be based on events or processes that can be shown to have happened, not just inferred from the extinction. It may be necessary to consider combinations of causes.
A new study finds that megatooth sharks’ warm-blood adaptation and giant size may have played a role in their extinction.
S. borealis is now extinct and the near-threatened S. tatarica is now limited to the steppe in Kazakhstan and Mongolia Hippopotamus (Hippopotamus amphibius) formerly inhabited Europe as far north as Great Britain at the beginning of the Late Pleistocene, becoming extinct in Europe around 30,000 years ago Reconstruction of the five phenotypes of ...