The animal was a mosasaur, an extinct, marine . Cuvier did not designate a scientific name for the new animal, and this was done by William Daniel Conybeare in 1822 when he named it Mosasaurus in reference to its origin in fossil deposits near the Meuse River. [50] The texture of the bones is virtually identical with in modern whales, which indicates Mosasaurus possessed a high range of aquatic adaptation and neutral buoyancy as seen in cetaceans. Mosasaurus is a genus of large aquatic carnivorous lizard from the Late Cretaceous about 70-66 million years ago. Mosasaurus - Wikipedia [7] Second, the studies relied on an unclean and shaky taxonomy of the Mosasaurus genus due to the lack of a clear holotype diagnosis, which may have been behind the genus's paraphyletic status. [7] Russell (1967) wrote that the length of the jaw equalled one tenth of the body length in the species. Sea turtles such as Allopleurodon hoffmanni and Glyptochelone suickerbuycki were also prevalent in the area and other marine reptiles including indeterminate elasmosaurs have been occasionally found. [5][50] In M. hoffmannii, this snout is blunt,[5] while in M. lemonnieri it is pointed. [88][126] Lingham-Soliar (1995) elaborated on this, finding that Maastrichtian deposits in the Netherlands with M. hoffmannii occurrences represented nearshore waters around 4050 meters (130160ft) deep. [53] With a skull measuring around 97.7 centimeters (38.5in) in length, M. conodon has been regarded as a small to medium-sized representative of the genus;[11] Paul (2022) estimated its maximum length as being 7m (23ft) and body mass as being 900kg (2,000lb). [131], M. hoffmannii fossils have been found within the K-Pg boundary itself in southeastern Missouri between the Paleocene Clayton Formation and Cretaceous Owl Creek Formation. [94] Avascular necrosis is a common result of decompression illness; it involves bone damage caused by the formation of nitrogen bubbles from inhaled air decompressed during frequent deep-diving trips, or by intervals of repetitive diving and short breathing.
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