Mosasaurus ... Mosasaurus (/ ˌmoʊzəˈsɔːrəs /; "lizard of the Meuse River ") is the type genus (defining example) of the mosasaurs, an extinct group of aquatic squamate reptiles. It lived …

Many mosasaurs of the Late Cretaceous were large. The longest mosasaurs, based on a specimen of Mosasaurus hoffmanni, are estimated to have been 17 meters (about 56 feet) in …

Mar 26, 2022 · The Mosasaurus was a genus of small to monstrous sea-dwelling reptiles that lived in the waters of the Late Cretaceous oceans during the Maastrichtian geologic timescale.

Aug 6, 2021 · Mosasaurus What Is A Mosasaurus? Mosasaurus is an extinct aquatic reptile that lived at the very end of the Cretaceous Period, from around 82.7 to 66 million years ago. …

Nov 10, 2020 · What is a mosasaur? Mosasaurs are a group of marine lizards that would have lived in the Badlands area from about 75-69 million years ago. When they were alive, …

Feb 1, 2025 · Mosasaurus was one of the most fascinating marine reptiles of the Late Cretaceous period. This powerful predator ruled the ancient oceans, boasting an impressive size that …

Aug 8, 2025 · Discover Mosasaurus with our interactive fossil map and geographical timeline chart.

Mosasaurus Hoffmannii, commonly known as Mosasaurus, is an extinct species of amphibious reptile that adapted well to the ocean environment and was widespread throughout the …

Mosasaurus hoffmannii was the apex predator of the Late Cretaceous oceans, reaching 11 metres (36 ft) in length and 3.8 metric tons (4.2 short tons) in body mass.

Oct 19, 2023 · Mosasaurs were Earth's last great marine reptiles. Learn about the surprising places they'd hunt, how some species dwarfed even the Tyrannosaurus rex, and how key …