YouTube video by Fossil Crates

Resolving the “ontogeny problem” in vertebrate paleontology

PDF | Mosasaurs are a clade of extinct secondarily marine-adapted lizards whose fossils are relatively common in museum collections around the world.... | Find, read and cite all the research you need...

There’s a newly crowned T. rex. This one, called Tylosaurus rex, was a tyrant of the sea and mosasaur spanning up to 43 feet in length.

There’s a newly crowned T. rex. This one, called Tylosaurus rex, was a tyrant of the sea and mosasaur spanning up to 43 feet in length.

We've got a new mosasaur, and it's a *big one.*

New research describes Tylosaurus rex from more than a dozen previously known fossils.

YouTube video by Path of Titans

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