Mosasaurus ... Mosasaurus (/ ˌmoʊzəˈsɔːrəs /; "lizard of the Meuse River ") is the type genus (defining example) of the Mosasauridae, an extinct group of aquatic squamate reptiles. It lived from about 82 …

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 length, but the most …

What is Mosasaurus? Is a mosasaur a dinosaur? Find out all about these ancient ocean predators.

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. Mosasaurus was …

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, mosasaurs could …

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 could reach …

MENG: Mosasaurus, it's a marine reptile. Specifically, it's a marine lizard. MENG reappears on screen. MENG: So this animal, although it has big teeth, it's not a dinosaur. A charcoal sketch of a long …

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

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 physical …

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.