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.

Millions of years before jazz filled New Orleans streets or fishing boats were harvesting shrimp in the Gulf, Louisiana was home to terrifying sea monsters, a tenacious mammal and a seismic cataclysm ...

Fossil egg found in Antarctica suggests marine reptiles laid eggs, challenging previous beliefs about ancient life.

Ancient Antarctic Sea Monster May Have Laid This Football-Size Egg. A 68 million-year-old egg the size of a football — the largest soft-shelled egg on record and the second largest egg ever discovered ...

Researchers have discovered a huge new mosasaur from Morocco, named Thalassotitan atrox, which filled the apex predator niche. With massive jaws and teeth like those of killer whales, Thalassotitan ...

The global fossil record of squamates, which includes lizards, mosasaurs, snakes, and amphisbaenians (A) is overwhelmingly incomplete, with most fossil species containing less than 20% of the totality ...