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Megalodon. Otodus megalodon (/ ˈmɛɡələdɒn / 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.
Nyasaurus White, 1973 (sic) Thecodontosaurus alophos Haughton, 1932 (in part) Nyasasaurus (meaning " Lake Nyasa lizard") is an extinct genus of avemetatarsalian archosaur from the putatively Middle Triassic Manda Formation of Tanzania that may be the earliest known dinosaur. The type species Nyasasaurus parringtoni was first described in 1956 ...
Most of the teeth found here range from 3 to 10 million years old. [13] Near New Caledonia, up until the practice was banned, fishermen and commercial vessels used to dredge the sea floor for megalodon teeth. In the state of Georgia, shark teeth are found so often that they decided to make shark teeth the official state fossil in 1976. [18]
The oldest fossils from 8.9 million years ago included megalodon teeth. Megalodon sharks were massive, and so were their teeth. Those shown here belonged to juveniles.
9-million-year-old marine fossils found beneath California high school during construction. Caitlin McCormack. September 11, 2024 at 12:41 AM. ... teeth from megalodon sharks, saber-toothed salmon ...
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 ...
Ptychodus. 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.
The pieces are now reunited, creating a single 5.5-inch-long, 5.1-inch-wide tooth that came from one of the world’s most fearsome predators — a prehistoric shark that reached nearly 60 feet in ...