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It has been found in latitudes as far north as 55° N, where paleoclimatic estimates calculate an average sea surface temperature of 5–10 °C (41–50 °F). Fossils of Cretoxyrhina are most well known in the Western Interior Seaway area, [ 68 ] which is now the central United States and Canada. [ 69 ]
The behemoth clocked in at a whopping 6 1/6 inches in length—roughly the size of a human hand!
The sharks were about 50 feet long, experts say.
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 ...
Chimaeras live in temperate ocean floors, with some species inhabiting depths exceeding 2,000 m (6,600 ft), [8] with relatively few modern species regularly inhabiting shallow water. Exceptions include the members of the genus Callorhinchus , the rabbit fish and the spotted ratfish , which locally or periodically can be found at shallower depths.
Extinct species within this genus lived from the Cretaceous period to the Quaternary period (from 99.7 to 0.012 Ma). Fossils have been found all over the world, especially in the Miocene and Oligocene sediments of Europe, the United States and Australia, in the Eocene of Egypt, Europe and the United States, as well as in the Cretaceous of Australia, Canada, the United States, Europe and Africa ...
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 ...
Cretalamna is a genus of extinct otodontid shark that lived from the latest Early Cretaceous to Eocene epoch (about 103 to 46 million years ago). It is considered by many to be the ancestor of the largest sharks to have ever lived, such as Otodus angustidens , Otodus chubutensis , and Otodus megalodon .