The dinosaur, now dubbed Gonkoken nanoi, inhabited the earth 72 million years ago in the Chilean Patagonia.
Crassigyrinus would have likely been a feared predator in its day, as it would have behaved somewhat like a modern crocodile.
This study also applies to other theropod dinosaurs such as the velociraptor.
Standing 3.9 meters high and measuring 11.6 meters long, it is only the third T-Rex skeleton to be offered at auction, and the first in Europe.
Scientists discovered the oldest known Ichthyosaur remains. The paleontological find is changing how scientists see the emergence of the species as a whole.
Measuring nearly one meter long, the footprint is the largest of its kind found in the English county of Yorkshire.
The fossil nests are part of one of the largest dinosaur hatcheries in the world, found in central India.
The fossilized remains, which consisted of teeth and post-cranial bone pieces, represent a diverse theropod community that lived up until the Cretaceous–Paleogene mass extinction event.