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Mosasaurus (/ ˌ m oʊ z ə ˈ s ɔːr ə s /; "lizard of the Meuse River") is the type genus (defining example) of the mosasaurs, an extinct group of aquatic squamate reptiles.It lived from about 82 to 66 million years ago during the Campanian and Maastrichtian stages of the Late Cretaceous.
The holotype specimen was excavated from the limestone quarries of Mount Saint Peter near Maastricht. It is the second documented discovery of mosasauroid fossils and was found between the 1770s and early 1780s. [3] [4] It was brought to Paris after the siege of Maastricht, where it was studied by Cuvier. [4] Mosasaurus missouriensis: Mosasaurus
The Mosasaurus hoffmannii skull found in Maastricht between 1770 and 1774. The first publicized discovery of a partial fossil mosasaur skull in 1764 by quarry workers in a subterranean gallery of a limestone quarry in Mount Saint Peter, near the Dutch city of Maastricht, preceded any major dinosaur fossil discoveries, but remained little known.
The best fishing months are from September to March. Carnivorous 170 cm. Good commercial fish. Spangled Emperor (Capitaine) Pale greyish-green. Scale has a white or bluish spot. Three blue streaks radiate from the eye. Somewhat pointed snout. White or yellowish fins. Dorsal fin is fringed with orange-red. Found near coral reefs over sandy bottoms.
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]
The first remains of Mosasaurus known to science are fragments of a skull discovered in 1764 at a subterranean chalk quarry under Mount Saint Peter, a hill near Maastricht, the Netherlands. It was collected by Lieutenant Jean Baptiste Drouin in 1766 and was procured in 1784 by museum director Martinus van Marum for the Teylers Museum at Haarlem .
Life restoration of the mosasaur Hainosaurus feeding on a cephalopod. This timeline of mosasaur research is a chronologically ordered list of important fossil discoveries, controversies of interpretation, and taxonomic revisions of mosasaurs, a group of giant marine lizards that lived during the Late Cretaceous Epoch. Although mosasaurs went ...
Megapterygius is a medium-sized mosasaur with an estimated skull length of 0.8 metres (2.6 ft) and a body length of approximately 6 metres (20 ft). Both the front and hind flippers are longer than the skull.