"So we started to work on identifying that as the new species which we recently named as Thanatotheristes Degrootorum", said Voris. "These ridges are not like anything we've ever seen before in other tyrannosaur species", he said.
"Thanatotheristes can be distinguished from all other tyrannosaurs by numerous characteristics of the skull, but the most prominent are vertical ridges that run the length of the upper jaw", said Jared Voris, a University of Calgary Ph.D. student and lead author of the study, in a press statement.
But this time, a new species of the "Tyrant Lizard" has popped up, and it's been awarded the deadly moniker, Thanatotheristes degrootorum, or Reaper of Death.
A new species of tyrannosaurus was found in Canada.
The second part of the dinosaur's name pays tribute to De Groot.
It took a decade for the rare fossils to be verified after John and Sandra found the bones on the shore of Alberta's Bow River.
"The jawbone was an absolutely stunning find".
Darla Zelenitsky is an assistant professor at the University of Calgary and is supervising Voris for his PhD.
Researchers have discovered a large new species of tyrannosaur that lived around 80 million years ago and was closely related to the iconic Tyrannosaurus rex.
"They were the apex predators of the eco system and the nature of the food chain, relative to plant eating dinosaurs, there just weren't many of these apex predators", said Zelenitsky.
"With this new species, we now know that tyrannosaurs were present in Alberta prior to 77 million years ago, the age of the next-oldest tyrannosaur", Dr. Therrien added.
She says Voris' keen eye recognized the new species and earned him the right to name it.
Francois Therrien, curator of dinosaur paleoecology at the Royal Tyrrell Museum of Palaeontology, says the specimen was collected in 2010 and has sat in storage ever since.
The dinosaur lived in the late Cretaceous Period, making it the oldest known tyrannosaur from North America.
Moving forward, Voris and the other scientists studying T. degrootorum's fossilized skull hope to glean more information about how the relatively small species, and other ones like it belonging to the same family, evolved into the monster tyrannosauruses we're now generally more familiar with. Do you think it really deserves the name "Reaper of Death", or should a name that aggressive be reserved for one of the larger species of the Tyrannosauridae family? "Here in Alberta we already have five".