The newly described mosasaur Tylosaurus rex spanned up to 43 feet (13 meters) long and may have been one of the fiercest marine predators of the dinosaur age.
I finally got around to visiting the Smithsonian's fossil hall a few years ago, and I was fascinated by this Prognathodon display showing it looking like an orca in life. Has anyone else seen this and what are your thoughts?
