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The fact that the bite marks were found on the tooth's roots further suggest that the shark broke the whale's jaw during the bite, suggesting the bite was extremely powerful. The fossil is also notable as it stands as the first known instance of an antagonistic interaction between a sperm whale and an otodontid shark recorded in the fossil record.
According to the fossil record, the divergence of coelacanths, lungfish, and tetrapods is thought to have occurred during the Silurian. [47] Over 100 fossil species of coelacanth have been described. [46] The oldest identified coelacanth fossils are around 420–410 million years old, dating to the early Devonian.
Otodus chubutensis, [1] meaning "ear-shaped tooth of Chubut", from Ancient Greek ὠτ (ōt, meaning "ear") and ὀδούς (odoús, meaning "tooth") – thus, "ear-shaped tooth", is an extinct species of prehistoric megatoothed sharks in the genus Otodus, that lived during Oligocene, Miocene, and Pliocene, in ~28–5.3 milions years ago. [2]
However, since the sharks’ presence in the fossil record has mostly consisted of isolated teeth, scientists have been left to speculate on what the rest of this ancient predator looked like ...
Paleontologists discovered the fossilized remains of an aquatic “dragon” that prowled the Pacific Ocean millions of years ago. The monstrous predator — which measured as long as a great ...
The fossils of Otodus sharks indicate that they were very large macro-predatory sharks. [7] The largest known teeth of O. obliquus measure about 104 millimetres (4.1 in) in height. [8] The vertebral centrum of this species are over 12.7 cm (5 inch) wide. [7] Scientists suggest that O. obliquus would have measured about 8–9 metres (26–30 ft ...
It looks like this shark is straight out of the movie "Jaws." Marine biologist Hoyos Padilla recorded this incredible footage showing the biggest shark ever caught on camera, which is 20 feet long.
Ptychodus (from Greek: πτυχή ptyche 'fold' and Greek: ὀδούς odoús 'tooth') [1] is a genus of extinct large durophagous (shell-crushing) lamniform sharks from the Cretaceous period, spanning from the Albian to the Campanian. [2] Fossils of Ptychodus teeth are found in many Late Cretaceous marine sediments worldwide. [3]