Ptychodus
Genus of fishes (fossil)
Ptychodus (from Greek: πτυχή ptyche 'fold' and Greek: ὀδούς odoús 'tooth') is a genus of extinct durophagous (shell-crushing) lamniform sharks from the Cretaceous period, spanning from the Cenomanian to the Campanian. Fossils of Ptychodus teeth are found in many Late Cretaceous marine sediments worldwide.
Nº Q648806 ★
Common · Nature
Ptychodus
Genus of fishes (fossil)
Ptychodus (from Greek: πτυχή ptyche 'fold' and Greek: ὀδούς odoús 'tooth') is a genus of extinct durophagous (shell-crushing) lamniform sharks from the Cretaceous period, spanning from the Cenomanian to the Campanian. Fossils of Ptychodus teeth are found in many Late Cretaceous marine sediments worldwide.
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From Wikipedia
Ptychodus (from Greek: πτυχή ptyche 'fold' and Greek: ὀδούς odoús 'tooth') is a genus of extinct durophagous (shell-crushing) lamniform sharks from the Cretaceous period, spanning from the Cenomanian to the Campanian. Fossils of Ptychodus teeth are found in many Late Cretaceous marine sediments worldwide. At least 16 species are considered valid, with the largest members of the genus suggested to have grown up to 10 meters (33 feet) long, and the smallest about 2 meters (6.6 feet). The youngest remains date to around 75 million years ago. A large number of remains have been found in the former Western Interior Seaway.
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