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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.
Some plesiosaurian remains, such as a 2.875-metre-long (9.43 ft) set of highly reconstructed and fragmentary lower jaws preserved in the Oxford University Museum and referable to Pliosaurus rossicus (previously referred to Stretosaurus [59] and Liopleurodon), indicated a length of 17 metres (56 ft).
The largest well known pliosauroid is Pliosaurus funkei at 10–13 m (33–43 ft) in length. [116] With a series of neck vertebrae from the Kimmeridge Clay Formation indicate a pliosaur, probably Pliosaurus, that may have been up to 14.4 metres (47 ft) long. [117]
Pliosauridae was formally named by Harry G. Seeley in 1874. [2]Pliosauridae is a stem-based taxon defined in 2010 (and in earlier studies in a similar manner) as "all taxa more closely related to Pliosaurus brachydeirus than to Leptocleidus superstes, Polycotylus latipinnis or Meyerasaurus victor". [3]
A study, which was published in January in the journal Aging Cell, breaks down the different methods scientists use to measure biological aging, and suggest that some of these methods are better ...
In 1832, Jonathan the Seychelles giant tortoise (Aldabrachelys gigantea hololissa) was born. Although his exact birthdate is unknown, he has been given the official birthday of December 4, 1832.
As in other plesiosaurs, the pterygoids of the palate are fused to the basioccipital of the braincase, [8] although the union is not as robust as in the pliosaurs Rhomaleosaurus and Pliosaurus. [8] [11] "The palatal bones are thin, but there is no suborbital fenestra." [8] The two rami of the lower jaw make a "V" shape with an angle of about 45 ...