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These localities include the Midwest and East Coast of the United States, Canada, Europe, Turkey, Russia, the Levant, the African coastline from Morocco[101] to South Africa, Brazil, Argentina, and Antarctica. Mosasaurus fossils have been found less than 15 meters (49ft) below the boundary in the Maastricht Formation, the Davutlar Formation in Turkey, the Jagel Formation in Argentina, Stevns Klint in Denmark, Seymour Island, and Missouri. [109] Mosasaurus continued to be the dominant genus in the seaway until the end of the Navesinkan Age at the end of the Cretaceous. MEGALODON VS MOSASAURUS - Who Would Win? - YouTube There are two finely ulcerated scratches on the bone callus, which may have developed as part of the healing process. Lingham-Soliar described this pit as resembling a tooth mark from a possible attacking mosasaur. [47][48][49], The type species, M. hoffmannii, is one of the largest marine reptiles known,[50][46] though knowledge of its skeleton remains incomplete as it is mainly known from skulls. On the lower jaw, only one type, the dentary teeth, were present. [9][50][61], A study published in 2013 by Schulp and colleagues specifically tested how mosasaurs such as M. hoffmannii and P. saturator were able to coexist in the same localities through 13C analysis. hoffmannii, M. missouriensis, M. lemonnieri, and a proposed new species 'M. [108] Extensive drainage from the neighboring continents, Appalachia and Laramidia, brought in vast amounts of sediment. Of the mosasaurs, Globidens phosphaticus is the characteristic species of the southern province; in the African and Arabian domain, Halisaurus arambourgi and 'Platecarpus ptychodon'[r][102] were also common mosasaurs alongside Globidens. Its tail was long and ended in a downward bend and a paddle-like fluke. Although there is no direct evidence specific to the genus, studies on the biochemistry of related mosasaur genera such as Clidastes[p] suggests that endothermy was likely present in all mosasaurs. This giant shark is 25 m in length (82 ft) and swims up to 17 m/s (55 ft/s). [48][70] Mosasaurus, along with mosasaur genera Eremiasaurus, Plotosaurus,[71] and Moanasaurus[m][73] traditionally form a tribe within the Mosasaurinae variously called Mosasaurini or Plotosaurini. Please consider to SUBSCRIBE:https://www.youtube.com/c/WildCiencias?sub_confirmation=1 For business inquiries: wil. It did not take into account Golduss' 1845 study of M. missouriensis which instead called for a narrower skull, nostrils at the top of the skull, and amphibious terrestrial limbs (the latter being incorrect in modern standards[44]). and that their bite force didnt matter but the 'venom' they inflicted did.I havent seen any paper on mosasaurs having venom. [129][130] The last fossils of Mosasaurus, which include those of M. hoffmannii and indeterminate species, occur up to the Cretaceous-Paleogene boundary (K-Pg boundary). The bite force of Mosasaurus has been estimated to be between 13,000 and 16,000 pounds per square inch (psi). [37] In 1967, Dale Russell argued that M. lemonnieri and M. conodon are the same species and designated the former as a junior synonym per the principle of priority. The teeth of P. saturator are much more robust than those of M. hoffmannii and were specifically equipped for preying on robust prey like turtles. Other marine reptiles such as the marine monitor lizard Pachyvaranus and the sea snake Palaeophis are known there.