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  1. Mosasaurus - Wikipedia

    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 …

  2. Mosasaur | Size, Diet, Facts, Time Period & Extinction | Britannica

    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 …

  3. Mosasaurus | Fossil Map, Size, Classification - Prehistoric Wildlife

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

  4. Mosasaurus: Overview, Size, Habitat, & Other Fascinating Facts

    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 …

  5. Are Mosasaurus Dinosaurs? Here Are the Key Differences

    Despite popular portrayals, the massive marine reptile known as Mosasaurus was not a dinosaur. This common misconception stems from their shared existence in the prehistoric era, often …

  6. Mosasaurus Facts & Pictures: Late Cretaceous Marine Predator

    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. …

  7. Mosasaurs may have terrorized rivers as well as oceans

    4 days ago · The Late Cretaceous apex predator easily grew to the size of a great white shark.

  8. A Mosasaur’s Last Meal - National Geographic

    But what did it actually eat? That’s a tale that cannot be told be teeth alone, and, fortunately for paleontologists, a lovely little Mosasaurus provides a partial answer to the question.

  9. Mosasaurus - Extinct Animals

    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.

  10. Giant 'sea dragon' fossil could be largest mosasaur ever …

    Apr 24, 2025 · The newly discovered fossil belonged to Mosasaurus hoffmanni, which was one of the largest — if not the largest — mosasaur species.