Earth was a terrifying place during the Cretaceous period, some 66 million to 145 million years ago. During its tail end, Tyrannosaurus rex prowled the land. And a little before that, another kind of ...

Tylosaurus res Image by Dr. Amelia R. ZietlowX; underwater marine scene in background Image by Canva A Kansas boy with a passion for geology made a remarkable discovery during a 4-H field trip, ...

Dive into the discovery of Tylosaurus rex, a monstrous marine predator stretching an astonishing 43 feet long! With ...

Equipped with powerful jaws and finely serrated teeth, paleontologists say the 43-foot-long prehistoric marine reptile deserves the name Tylosaurus rex. After remeasuring dozens of mosasaur specimens ...

Some of the fossils connected to this discovery have been on display all along.

Classification and scale This animal was a mosasaur,a group of large marine reptiles that lived during the Late Cretaceous ...

Larger Marine Predator Than Tyrannosaurus Rex Identified Fossil reanalysis confirms Tylosaurus rex as distinct species, outsize apex predator of ancient seas ...

Paleontologists have long hailed Tyrannosaurus rex as king of the dinosaurs. Now, the name “T. rex” also belongs to a newly described extinct carnivore — a massive marine reptile with the scientific ...

I certainly wasn’t the first to imagine such scenes from a time when a shallow sea encroached over what is now the middle of North America. Charles H. Sternberg – a skilled 19th century fossil hunter ...