A fearsome lizard whose name means “reaper of death” is the first new tyrannosaur species to be identified in Canada in 50 years, say researchers with the University of Calgary and the Royal Tyrrell Museum. The dinosaur is shown in a handout illustration. (Photo by Julius Csotonyi, University of Calgary

A fearsome lizard whose name means “reaper of death” is the first new tyrannosaur species to be identified in Canada in 50 years, say researchers with the University of Calgary and the Royal Tyrrell Museum. The dinosaur is shown in a handout illustration. (Photo by Julius Csotonyi, University of Calgary

‘Reaper of death:’ Fearsome new dinosaur species discovered in Alberta

Tyrannosaur not believed to have been a direct ancestor of T. rex, but its own evolutionary offshoot

A fearsome lizard with a name meaning “reaper of death” is the first new tyrannosaur species to be identified in Canada in 50 years, say researchers with the University of Calgary and the Royal Tyrrell Museum.

Tyrannosaurs were large meat-eating dinosaurs that walked on two legs and had short arms, two fingers and massive skulls with dagger-like teeth. Tyrannosaurus rex is the most famous in this group.

Jared Voris was examining skull fragments stored in a drawer at the Royal Tyrrell Museum in Drumheller, Alta., as part of his masters thesis when he noticed features not seen in other tyrannosaur specimens. The most obvious were prominent vertical ridges along the upper jaw line.

“We’d find one feature, and then we’d find another, and then it would just kind of cascade into finally understanding that this was something completely different than what we’d seen before,” said Voris, who is now working on his PhD in paleontology at the University of Calgary.

Voris, 25, said “it’s definitely a weird feeling” to make a big discovery so early in his career.

He figures the beast could have been about eight metres long with an 80-centimetre skull.

“It would have been quite an imposing animal,” he said. ”It definitely would have caused some panic.”

READ MORE: B.C. researcher unveils province’s first unique dinosaur discovery

The new species is named Thanatotheristes degrootorum, which combines the Greek word for “reaper of death” with the name of a southern Alberta couple, the DeGroots, who happened upon the fossil fragments along the shore of the Bow River west of Medicine Hat, Alta., in 2010.

Darla Zelenitsky, who is Voris’s PhD thesis supervisor, said Thanatotheristes predates T. rex by about 12 million years and is the oldest known tyrannosaur discovered in Canada.

She said it offers clues about a poorly understood time period.

“We’re learning more about the ecosystem at this older period of time when dinosaurs roamed southern Alberta,” she said.

Only two other dinosaurs have been found in the same rock formation, and both were plant-eaters.

“This is the first apex predatory dinosaur species known from this formation,” said Zelenitsky.

“To me this is a big discovery and it’s even more exciting because it was made by one of my students.”

ALSO READ: Meet the T. rex cousin who you could literally look down on

The new tyrannosaur is not believed to have been a direct ancestor of T. rex, but was its own evolutionary offshoot. It seems to have more in common with a type of tyrannosaur found in Alberta called Daspletosaurus.

Francois Therrien, a paleontologist at the Royal Tyrrell, said the general public can play a role in new discoveries, just like the DeGroots did.

“A lot of people go in areas that paleontologists would not think of going, either because we’re unaware that there’s exposures in that area or just because there’s bigger pockets of badlands that we tend to focus on,” he said.

Anyone who finds a fossil should leave it where it is, note its exact location and contact the museum, he said.

Therrien, who also worked with Voris, said the student’s discovery is significant.

“First, discovering a new species and, second, it is a tyrannosaur. I don’t think it gets any better than that.”

An article detailing Thanatotheristes degrootorum and written by Voris, Zelenitsky, Therrien and paleontologist Caleb Brown, was published Monday in the journal Cretaceous Research.

Lauren Krugel, The Canadian Press

Like us on Facebook and follow us on Twitter.

Science

Get local stories you won't find anywhere else right to your inbox.
Sign up here

Just Posted

Garry Blanchard of Hope won $77,000 correctly guessing the outcomes of all 13 games of NFL week 17. (Photo/BCLC)
Hope resident rakes in $77,000 in NFL Week 17 bet

Garry Blanchard won the record-breaking prize correctly guessing every outcome that week

Chilliwack ER doctor Marc Greidanus is featured in a video, published Jan. 18, 2021, where he demonstrates and describes effectiveness of various styles of masks. (Youtube)
VIDEO: Chilliwack ER doc runs through pros and cons of various masks

‘We’ve been asked to wear a mask and it’s not that hard,’ Greidanus says.

(Grace Kennedy/The Observer)
Harrison hoping for $750K to upgrade fire hall

The renovations would include seismic upgrades, changes to social distancing for fire fighters

Keith Carlson, chair and director of the Peace and Reconciliation Centre at Univeristy of the Fraser Valley.
UFV hosts online session about interpersonal violence

Peace and Reconciliation Centre in Abbotsford holds discussion on Thursday, Jan. 21

Harrison Hot Springs Elementary will be getting a solar power system this summer. (Grace Kennedy/The Observer) [Harrison Hot Springs Elementary, Jan. 18, 2021]
Harrison Elementary to get solar power this summer

The $300K project will see the school moving towards carbon neutrality

B.C. Representative for Children and Youth Jennifer Charlesworth (Black Press files)
B.C. watchdog says mentally ill children and youth retraumatized in hospital

The number of children held under the Mental Health Act has increased an alarming 162 per cent in past decade

People wearing face masks to curb the spread of COVID-19 walk past a window display at a store in downtown Vancouver, on Sunday, December 13, 2020. The association representing businesses across Metro Vancouver says the costs of COVID-19 continue to mount for its members.THE CANADIAN PRESS/Darryl Dyck
Greater Vancouver business organization says members face uncertain outlook in 2021

Many Greater Vancouver businesses are barely treading water as they enter 2021

A handgun seized by Surrey RCMP. (Photo: Police handout)
Crime Stoppers received 500+ tips about Metro Vancouver guns, gang activity in 2020: report

Metro Vancouver organization ‘urging local residents to keep providing anonymous tips’

A new video from NCCIH and BC Northern Health titled ‘Healing in Pandemic Times: Indigenous Peoples, Stigma and COVID-19’ was animated by Joanne Gervais. (Photo Provided By: NCCIH Archives)
VIDEO: Stigma against Indigenous people is a ‘social sickness’

A new short animated video is aiming to educate the public on the stigmatization

A pinniped was attacked by an unseen predator off the shores of Dallas Road Monday night. (Courtesy of Steffani Cameron)
VIDEO: Seal hunting, not being hunted in video shot off Victoria waterfront

Victoria woman captures footage of pinniped activity off Dallas Road

Join Black Press Media and Do Some Good
Join Black Press Media and Do Some Good

Pay it Forward program supports local businesses in their community giving

Cannabis bought in British Columbia (Ashley Wadhwani/Black Press Media)
Is it time to start thinking about greener ways to package cannabis?

Packaging suppliers are still figuring eco-friendly and affordable packaging options that fit the mandates of Cannabis Regulations

Prime Minister Justin Trudeau provides an update on the COVID-19 pandemic from Rideau Cottage in Ottawa on Tuesday, Jan. 11, 2021. THE CANADIAN PRESS/Sean Kilpatrick
Prime Minister Justin Trudeau provides an update on the COVID-19 pandemic from Rideau Cottage in Ottawa on Tuesday, Jan. 11, 2021. THE CANADIAN PRESS/Sean Kilpatrick
Trudeau vows to keep up the fight to sway U.S. on merits of Keystone XL pipeline

Canada’s pitch to the Biden team has framed Keystone XL as a more environmentally friendly project than original

The British Columbia Hotel Association (BCHA) sent out a sharply worded release late last week, in which it noted that the Tourism Industry Association of BC recently obtained a ‘legal opinion’ on the matter (Alex Passini photo)
Hotel associations push back against any potential ban on inter-provincial, non-essential travel restrictions

B.C. Premier John Horgan is seeking legal advice on banning non-essential travel

Most Read