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Mosasaurus fossils have been found in North and South America, Europe, Africa, Western Asia, and Antarctica. This distribution encompassed a wide range of oceanic climates including tropical, subtropical, temperate, and subpolar. Mosasaurus was a common large predator in these oceans and was positioned at the top of the food chain.
The largest-known mosasaur is likely Mosasaurus hoffmanni, estimated at more than 17 m (56 ft) in length, [257] [258] however these estimations are based on heads and total body length ratio 1:10, which is unlikely for Mosasaurus, and probably that ratio is about 1:7. [259]
Instead, they primarily relied on stratigraphic associations and Cuvier's 1808 research on the holotype skull. Thus, in-depth research on the placement of Mosasaurus was not undertaken until the discovery of more complete mosasaur fossils during the late 19th century, which reignited research on the placement of mosasaurs among squamates. [8]
Some mosasaurs measured just a few feet long, while the largest — in the genus Mosasaurus — was nearly 60 feet (18.2 meters) long, and while mosasaur fossils are relatively plentiful ...
The team initially suspected the specimen to be the oldest known Mosasaurus, but further preparation uncovered features indicating a new intermediate genus and species between Mosasaurus and the more primitive Clidastes. [1] The study, published in 2023, named the species Jormungandr walhallaensis.
Along the way they found fossils of sea monsters like Mosasaurus, the knife-toothed menace of the primal seas. ... giving the gift of vigorous American life to the whole world. On the backs of ...
Mosasaurus hoffmannii, the largest known species reached up to 17 m (56 ft), [3] but it has been considered to be probably overestimated by Cleary et al. (2018). [4] Currently, the largest publicly exhibited mosasaur skeleton in the world is on display at the Canadian Fossil Discovery Centre in Morden, Manitoba.
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.