Some 66 million years ago, a city bus-sized terrifying predator prowled a prehistoric river in what is now North Dakota. This finding is based on the analysis of a single mosasaur tooth conducted by ...

A fossil once hailed as evidence of a unique mosasaur species, Xenodens calminechari, may be a forgery, a new study claims. The 72-million-year-old fossil, described in 2021, includes a partial ...

A giant ocean predator that terrorised the seas during the time of the dinosaurs may have also hunted in rivers, a tooth fossil discovered in North Dakota suggests. The extinct lizard-like reptile ...

The cradle of palaeontology – the study of fossil remains of animals and plants – lies in the Maastricht limestones, where the first Mosasaurus was discovered in 1766. The Dutch-Belgian border area ...

At the end of the Cretaceous Period, a type of giant reptile called mosasaurs occupied and dominated oceanic food webs. Mosasaurs had long bodies and were related to both snakes and monitor lizards.

A recent investigation demonstrates that mosasaurs, previously considered solely marine reptiles, managed to flourish in freshwater rivers during their last million years, just before extinction over ...

Researchers are calling for CT scans to confirm the authenticity of a Cretaceous period fossil that led to the identification of a new mosasaur species. Reading time 3 minutes In 2021, scientists ...