News / Science & Technology

Fossils of Miniature T. Rex Found in Arctic

FILE - Tyrannosaurus rex dinosaur replica at the Woodland Park Zoo in Seattle, Washington
FILE - Tyrannosaurus rex dinosaur replica at the Woodland Park Zoo in Seattle, Washington
Jessica Berman
Paleontologists have unearthed the fossilized remains of a pygmy Tyrannosaurus rex in northern Alaska. The prehistoric creature, which roamed the Arctic some 70 million years ago during the late Cretaceous period, was about half the size of its fearsome first cousin farther to the south.

Most cars weigh more than Nanuqsaurus, whose name means “polar bear lizard” in the Alaskan Inupiat language.

When fully grown, scientists estimate the size of the dinosaur formally known as Nanuqsaurus hoglundi to have been around six meters long, weighing a mere 450 kilograms. Paleontologists say the pygmy T. rex was the spitting image of its enormous first cousin, the giant tyrannosaur, which was twice the size of Nanuqsaurus.

A skull section and upper and lower jaw bones belonging to the pygmy T. rex were discovered by paleontologists with the Perot Museum in Dallas, Texas in the southeastern U.S. They found fossils of the mini tyrannosaur while unearthing the remains of another previously unknown, tiny, horned dinosaur.

Anthony Fiorillo spotted the bones of Nanuqsaurus in a four-by-four meter excavation site in the Prince Creek Formation in Alaska’s North Slope above the Arctic Circle.

“I am absolutely thrilled by this discovery. And the fact that we found not one, but two brand new animals in the very same hole in the ground is absolutely mind-boggling to me,” he said.

The discovery of Nanuqsaurus did not come as a total surprise to paleontologists. They had suspected the existence of a carnivorous predator in the Arctic because of teeth marks on the bones of the horned dinosaur, which was probably a rare treat for the pygmy T. Rex.

Matt Lamanna is assistant curator of vertebrate paleontology at the Carnegie Museum of Natural History in Pittsburgh, Pennsylvania. Because the Arctic region is cloaked in darkness for half the year, Lamanna says there probably was not much for the tiny Nanuqsaurus to eat.

“There was evolutionary pressure on it to develop small size because the environment it was living in probably would have had less food, consistently available food, than environments further south that were far less seasonal that ... didn’t have long periods of darkness and long periods of light,” said Lamanna.

Experts say Nanuqsaurus was not  the only prehistoric animal that adapted to isolated environments; on a remote Russian Arctic coast island, mammoths the size of cows wandered around.

Anthony Fiorillo and colleagues describe their discovery of the pygmy Tyrannosaur in the journal PLoS ONE.

You May Like

Video Iran Nuclear Deal Becomes US Campaign Issue

Voters in three crucial battleground states - Florida, Ohio and Pennsylvania - overwhelmingly oppose nuclear deal with Iran More

With IS in Coalition Cross-Hairs, al-Qaida's Syria Affiliate Reemerges

Jabhat al-Nusra has rebounded, increasingly casting itself as a critical player in battle for Syria’s future More

Lessons Learned From Katrina, 10 Years Later

FEMA chief Craig Fugate says key changes include better preparation, improved coordination among state, federal assistance agencies More

This forum has been closed.
Comments
     
There are no comments in this forum. Be first and add one

Featured Videos

Your JavaScript is turned off or you have an old version of Adobe's Flash Player. Get the latest Flash player.
Colombians Flee Venezuela as Border Crisis Escalatesi
X
August 27, 2015 2:08 AM
Hundreds of Colombians have fled Venezuela since last week, amid an escalating border crisis between the two countries. Last week, Venezuelan President Nicolas Maduro ordered the closure of a key border crossing after smugglers injured three Venezuelan soldiers and a civilian. The president also ordered the deportation of Colombians who are in Venezuela illegally. Zlatica Hoke reports.
Video

Video Colombians Flee Venezuela as Border Crisis Escalates

Hundreds of Colombians have fled Venezuela since last week, amid an escalating border crisis between the two countries. Last week, Venezuelan President Nicolas Maduro ordered the closure of a key border crossing after smugglers injured three Venezuelan soldiers and a civilian. The president also ordered the deportation of Colombians who are in Venezuela illegally. Zlatica Hoke reports.
Video

Video Is China's Economic Data Accurate?

Some investors say China's wild stock market gyrations have been made worse by worries about the reliability of that nation's economic data. And some critics say the reports can mislead investors by painting an unrealistically-strong picture of the economy. A key China scholar says Beijing is not fudging ((manipulating)) the numbers, but that the economy is evolving quickly from smoke-stack industries to services, and the ways of tracking new economic activity are falling behind the change. V
Video

Video Next to Iran, Climate at Forefront of Obama Agenda

President Barack Obama this week announced new initiatives aimed at making it easier for Americans to access renewable energy sources such as solar and wind. Obama is not slowing down when it comes to pushing through climate change measures, an issue he says is the greatest threat to the country’s national security. VOA correspondent Aru Pande has more from the White House.
Video

Video Shipping Containers Provide Experimental Housing

Housing prices around the San Francisco Bay area are out of reach for many people, so some young entrepreneurs, artists and tech industry workers are creating their own houses using converted shipping containers. But as VOA's Mike O’Sullivan reports from Oakland, the effort requires ingenuity and dealing with restrictive local laws.
Video

Video Arctic Draws International Competition for Oil

A new geopolitical “Great Game” is underway in earth’s northernmost region, the Arctic, where Russia has claimed a large area for resource development and President Barack Obama recently approved Shell Oil Company’s test-drilling project in an area under U.S. control. Greg Flakus reports.
Video

Video Philippine Maritime Police: Chinese Fishermen a Threat to Country’s Security

China and the Philippines both claim maritime rights in the South China Sea.  That includes the right to fish in those waters. Jason Strother reports on how the Philippines is catching Chinese nationals it says are illegal poachers. He has the story from Palawan province.
Video

Video Technique May Eliminate Drill-and-Fill Dental Care

Many people dread visiting dentists because they're afraid of drills. Now, however, a technology developed by a British firm promises to eliminate the need for mechanical cleaning of dental cavities by speeding a natural process of tooth repair. VOA’s George Putic reports.
Video

Video China's Spratly Island Building Said to Light Up the Night 'Like A City'

Southeast Asian countries claim China has illegally seized territory in the Spratly islands. It is especially a concern for a Philippine mayor who says Beijing is occupying parts of his municipality. Jason Strother reports from the capital of Palawan province, Puerto Princesa.
Video

Video Ages-old Ice Reveals Secrets of Climate Change

Ice caps don't just exist at the world's poles. There are also tropical ice caps, and the largest sits atop the Peruvian Andes - but it is melting, quickly, and may be gone within the next 20 years. George Putic reports scientists are now rushing to take samples to get at the valuable information about climate change locked in the ice.
Video

Video French Experiment in Integrating Roma Under Threat

Plans to destroy France’s oldest slum have sparked an outcry on the part of its Roma residents. As Lisa Bryant reports from the Paris suburb of La Courneuve, rights groups argue the community is a fledgling experiment on integrating Roma who are often outcasts in many parts of Europe.
Video

Video Kenyans Turn to Agriculture for Business

Each year Kenyan universities continue to churn out graduates for the job market despite the already existing high rate of unemployment among youth in the country. Some of these young men and women have realized that agriculture can be as rewarding as any other business or job, and they are resorting to agribusiness in large numbers as a way of tackling unemployment. Rael Ombuor reports for VOA.
Video

Video First Women Graduate Elite Army Ranger School

Two women are making history for the U.S. Army by proving they are among the toughest of the tough. VOA's Carla Babb reports from Fort Benning, Georgia as 94 men and those two women rise as graduates of the difficult Ranger school.

VOA Blogs