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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.
Late Pleistocene in northern Spain, by Mauricio Antón.Left to right: wild horse; woolly mammoth; reindeer; cave lion; woolly rhinoceros Mural of the La Brea Tar Pits by Charles R. Knight, including sabertooth cats (Smilodon fatalis, left) ground sloths (Paramylodon harlani, right) and Columbian mammoths (Mammuthus columbi, background)
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Numerous extinctions occurred during the latter half of the Last Glacial Period when most large mammals went extinct in the Americas, Australia-New Guinea, and Eurasia, including over 80% of all terrestrial animals with a body mass greater than 1,000 kilograms (2,200 lb). Small animals and other organisms like plants were generally unaffected ...
Millions of prehistoric marine fossils were discovered beneath a California high school over the course of a multi-year construction project. The relics recovered at San Pedro High School included ...
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Great auk (last confirmed pair was killed in the 1840s) Thylacine (the last thylacine killed in the wild was shot in 1930; the last captive tiger lived in Hobart Zoo until 1936) Kauai O'o (last known member was heard in 1987; the entire Mohoidae family became extinct with it) Spectacled cormorant (last known members were said to live in the 1850s)
This was especially the case with "M." borsoni, males of which are suggested to have had an average body mass of 16 t (16 long tons; 18 short tons) making it the largest known proboscidean alongside the extinct Indian elephant species Palaeoloxodon namadicus, and one of the largest land mammals to have ever lived.