A new species of carnivorous dinosaur, which was first unearthed in 1990, in Utah, USA, has been named as the oldest of allosaurs (two-legged carnivores), which inhabited the Earth 155 million years ago. years, during the Jurassic.
According to the researchers, this animal lived in western North America. His newly appointed Allosaurus jimmadseni has just been announced in the PeerJ public magazine.
In addition to having two legs, this species is characterized by having a short and narrow skull with low facial ridges that extend from the horns, pass in front of the eyes and reach the nose. in front of the eyes to the nose.
They also had a narrow part of the skull with a flat surface to the bottom of the skull under the eyes. They had a long tail and sharp claws.
Researchers point him as one of the most common predators of his time.
Although there are experts who They say there may be about 12 species of this breed in North America, the recent study recognizes only two: A. fragilis and A. jimmadseni.
“Recognizing a new species of rock dinosaur that has been intensively researched for more than 150 years is an exceptional discovery experience. Allosaurus jimmadseni is a great example of how much more we have to learn about the world of dinosaurs,” said the co-author of the study, Daniel Chure, a retired paleontologist of the Dinosaur National Monument.