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The flipper arrangement is unusual for aquatic animals in that probably all four limbs were used to propel the animal through the water by up-and-down movements. The tail was most likely only used for helping in directional control. This contrasts to the ichthyosaurs and the later mosasaurs, in which the tail provided the main propulsion. [65]
Prehistoric marine reptiles (6 C, 15 P) T. Trilobozoa (8 P) Pages in category "Prehistoric marine animals" The following 38 pages are in this category, out of 38 total.
A companion book, Sea Monsters: Prehistoric Predators of the Deep (published as Chased by Sea Monsters: Prehistoric Predators of the Deep in the United States), was co-authored by Marven and Jasper James, producer and director of the series. The book received positive reviews, with reviewers noting that though it was based on a TV series, it ...
The skull of a pliosaur, a prehistoric sea monster, was discovered on a beach in Dorset, England, and it could reveal secrets about these awe-inspiring creatures. The skull of a pliosaur, a ...
Cetiosaurus (/ ˌ s iː t i oʊ ˈ s ɔːr ə s, ˌ s iː ʃ i-/) [1] meaning 'whale lizard', from the Greek keteios / κήτειος meaning 'sea monster' (later, 'whale') and sauros / σαυρος meaning 'lizard', is a genus of herbivorous sauropod dinosaur from the Middle Jurassic Period, living about 168 million years ago in what is now Britain and probably France.
List of Asian dinosaurs; List of Australian and Antarctic dinosaurs; List of dinosaurs and other Mesozoic reptiles of New Zealand; List of European dinosaurs; List of Indian and Madagascan dinosaurs; List of North American dinosaurs. List of Appalachian dinosaurs; List of archosaurs of the Chinle Formation; List of dinosaurs of the Morrison ...
The skeleton of an extinct prehistoric reptile predator, known as a sea dragon, is the largest and most complete ever discovered in the U.K., researchers said Monday.
Since 1959, a second enigmatic group of ancient sea reptiles is known, the Hupehsuchia. Like the Ichthyopterygia, the Hupehsuchia have pointed snouts and show polydactyly, the possession of more than five fingers or toes. Their limbs more resemble those of land animals, making them appear as a transitional form between these and ichthyosaurs.