Mosasaur evolution represents one of the most striking examples of evolutionary innovation among marine reptiles. Emerging in the mid-Cretaceous, these marine squamates rapidly diversified to occupy a ...
The Western Interior Seaway, which existed roughly 80 million years ago, split North America into North and South. It was a ...
Giant mosasaurs, once thought to be strictly ocean-dwelling predators, may have spent their final chapter prowling freshwater rivers alongside dinosaurs and crocodiles. A massive tooth found in North ...
The Hell Creek Mosasaur, reconstruction by Christopher DiPiazza. Please note that more images and a short video are available at this link: https://springernature-my ...
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Mosasaur lived in freshwater at Hell Creek, not just the sea

A mosasaur tooth discovered alongside a T. rex tooth and a freshwater crocodilian jaw in North Dakota raised new questions about the final days of the Western Interior Seaway. Stable isotope analysis ...