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The end of the Permian Period (252 million years ago) saw yet another mass extinction event, wiping out around 96% of all marine life. But a handful of shark lineages persisted.
Jun 3, 2021 · About 19 million years ago, something terrible happened to sharks. Fossils gleaned from sediments in the Pacific Ocean reveal a previously unknown and dramatic shark extinction event, during...
It has been thought that megalodon became extinct around the end of the Pliocene, about 2.6 Mya; claims of Pleistocene megalodon teeth, younger than 2.6 million years old, are considered unreliable. A 2019 assessment moves the extinction date back to earlier in the Pliocene, 3.6 Mya.
Jul 9, 2021 · July 9, 2021 at 6:30 am. Massive numbers of sharks died abruptly 19 million years ago, new data show. Fossils from sediments in the Pacific Ocean reveal that 90 percent of them vanished. And so far, scientists don’t know why. “It’s a great mystery,” says Elizabeth Sibert.
Mar 1, 2023 · Megalodon was the largest shark ever documented and one of the largest fish on record. It died out about 2.6 million years ago.
Hammerheads were the last of the modern shark families to evolve, and did so in the Cenozoic. Their evolution date is estimated at between 50 and 35 million years ago. Despite surviving 5 mass extinctions, today, many shark species are threatened with extinction.
Jul 26, 2022 · As a group, they have existed for at least 450 million years, surviving four of the "big five" mass extinctions, including the catastrophe that wiped out the nonavian dinosaurs 66 million years ago...
