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Liopleurodon is a representative of the Thalassophonea clade, a derived group of pliosaurids characterized by a short neck and a large elongated skull. In 1999, the size of Liopleurodon was greatly exaggerated in the BBC documentary series Walking with Dinosaurs, depicted as reaching 25 m (82 ft) in length. However, the different attributed ...
Pliosaurus (meaning 'more lizard') is an extinct genus of thalassophonean pliosaurid known from the Late Jurassic (Kimmeridgian and Tithonian stages) of Europe and South America. This genus has contained many species in the past but recent reviews found only six ( P. brachydeirus ( type species ), P. carpenteri , P. funkei , P. kevani , P ...
Pliosauroidea is an extinct clade of plesiosaurs, known from the earliest Jurassic to early Late Cretaceous.They are best known for the subclade Thalassophonea, which contained crocodile-like short-necked forms with large heads and massive toothed jaws, commonly known as pliosaurs.
A pliosaur "Sharptooth Swimmer" (Liopleurodon) appeared in The Land Before Time IX: Journey to Big Water. A Tyrannosaurus appeared in the opening narration to The Land Before Time X: The Great Longneck Migration fighting an Apatosaurus. A Bellydragger (Sarcosuchus) appeared in The Land Before Time X: The Great Longneck Migration.
These were characterized by a large head and a short neck, such as Liopleurodon and Simolestes. These forms had skulls up to three metres (ten feet) long and reached a length of up to seventeen metres (56 feet) and a weight of ten tonnes. The pliosaurids had large, conical teeth and were the dominant marine carnivores of their time.
The first of these is an ichthyosaur, a prehistoric creature resembling a dolphin, with several individuals shown hunting, before one is shown escaping from a Liopleurodon. The movie then takes us to the Early Cretaceous of South America, approximately 90 million years ago.
Officers at Fort Wallace, Kansas, in 1867.Theophilus H. Turner, who the same year discovered Elasmosaurus in the area, is second from left.. In early 1867, the American army surgeon Theophilus Hunt Turner and the army scout William Comstock explored the rocks around Fort Wallace, Kansas, where they were stationed during the construction of the Union Pacific Railroad.
In naming the specimen, Carpenter noted "Of all known pliosauroids, Plesiopleurodon wellesi most closely resembles Liopleurodon ferox from the Oxfordian of Europe, hence the generic reference." [2] It was initially described as a pliosauroid due to it short neck, a common trait of the superfamily (although it is in the order Plesiosauria).