When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. Mosasaurs went extinct 65.5 million years ago in the same mass extinction event that wiped out ...

Dr. Scott explains all about the prehistoric marine species Mosasaurus. Dr. Scott explains all about the prehistoric marine species Mosasaurus. Dinosaur Train is available to stream on pbs.org and the ...

Mosasaurs were a diverse group of marine lizards which, much like whales and other cetaceans, adapted to life in the oceans. And though we’ve been digging them up for 200 years now, new species are ...