Featured Research

from universities, journals, and other organizations

New Species of Tyrannosaur Discovered in Southwestern U.S.

Date:
February 1, 2010
Source:
Society of Vertebrate Paleontology
Summary:
A new species of tyrannosaur has been discovered in the Bisti/De-na-zin Wilderness of New Mexico. Bistahieversor was different from other tyrannosauroids in having an extra opening above its eye, a complex joint at its "forehead," and a keel along its lower jaw; it also had more teeth than its distant relative T. rex.

The skull of the holotype specimen (NMMNH P-27469) of Bistahieversor sealeyi on display in the Cretaceous Seacoast exhibit at the New Mexico Museum of Natural History and Science.
Credit: Photo by David Baccadutre, New Mexico Museum of Natural History and Science.

New Mexico is known for Anasazi and Pueblo Indian ruins, Georgia O'Keefe's art and the Los Alamos National Laboratory. Paleontologists Thomas Williamson of the New Mexico Museum of Natural History and Thomas Carr of Carthage College is now bringing a new superstar to the state.

Bistahieversor sealeyi (pronounced: bistah-he-ee-versor see-lee-eye) is a new species of tyrannosaur discovered in the Bisti/De-na-zin Wilderness of New Mexico. Tyrannosaurs include the famous meat-eating dinosaurs like T. rex, with their characteristic body and skull shape and their mouthful of ferocious teeth that make them easy for paleontologists and kids to recognize.

The skull and skeleton of Bistahieversor were collected in the first paleontological excavation from a federal wilderness area, and the specimen was airlifted from the badlands by a helicopter operated by the Air Wing of the New Mexico Army National Guard. "Bistahieversor sealeyi is the first valid new genus and species of tyrannosaur to be named from western North America in over 30 years," says Williamson.

Tyrannosaurs are best known from 65-75 million year old sediments from the Rocky Mountain region of North America. Bistahieversor provides important insights into the evolutionary history of the group.

"Bistahieversor is important because it demonstrates that the deep snout and powerful jaws of advanced tyrannosaurs like T. rex were special adaptations that evolved around 110 million years ago, after the eastern and western halves of North America were separated by a shallow sea," says Carr.

Bistahieversor was different from other tyrannosauroids in having an extra opening above its eye, a complex joint at its "forehead," and a keel along its lower jaw; it also had more teeth than its distant relative T. rex.

Bistahieversor skulls and skeletons collected from the Bisti/De-na-zin Wilderness and from the lands of the Navajo Nation are currently on display at the New Mexico Museum of Natural History.

The finding is detailed in the January issue of the Journal of Vertebrate Paleontology.


Story Source:

The above story is based on materials provided by Society of Vertebrate Paleontology. Note: Materials may be edited for content and length.


Cite This Page:

Society of Vertebrate Paleontology. "New Species of Tyrannosaur Discovered in Southwestern U.S.." ScienceDaily. ScienceDaily, 1 February 2010. <www.sciencedaily.com/releases/2010/01/100131220341.htm>.
Society of Vertebrate Paleontology. (2010, February 1). New Species of Tyrannosaur Discovered in Southwestern U.S.. ScienceDaily. Retrieved October 22, 2014 from www.sciencedaily.com/releases/2010/01/100131220341.htm
Society of Vertebrate Paleontology. "New Species of Tyrannosaur Discovered in Southwestern U.S.." ScienceDaily. www.sciencedaily.com/releases/2010/01/100131220341.htm (accessed October 22, 2014).

Share This



More Fossils & Ruins News

Wednesday, October 22, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Sunken WWII U-Boat That Fired On U.S. Convoy Found

Sunken WWII U-Boat That Fired On U.S. Convoy Found

Newsy (Oct. 22, 2014) U-576, a long-lost German U-boat the U.S. sank in 1942, has been found just 30 miles off North Carolina's coast and near the wreckage of another ship. Video provided by Newsy
Powered by NewsLook.com
Turns Out Jack The Ripper's True Identity Is Still Unknown

Turns Out Jack The Ripper's True Identity Is Still Unknown

Newsy (Oct. 20, 2014) After testing DNA from a shawl found near one of Jack the Ripper's victims, a scientist said he'd identified the killer. New reports refute the claim. Video provided by Newsy
Powered by NewsLook.com
Fish Fossil Shows First-Ever Sex Was Done Side By Side

Fish Fossil Shows First-Ever Sex Was Done Side By Side

Newsy (Oct. 19, 2014) A 380-million-year-old fish may be the first creature to have copulative sex - and it was side by side with arms linked, like square dancers. Video provided by Newsy
Powered by NewsLook.com
As Sweden Hunts For Sub, "Cold War" Comparisons Flourish

As Sweden Hunts For Sub, "Cold War" Comparisons Flourish

Newsy (Oct. 19, 2014) With Sweden on the look-out for a suspected Russian sub, a lot of people are talking about the Cold War, but is it an apt comparison? Video provided by Newsy
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:

Strange & Offbeat Stories


Plants & Animals

Earth & Climate

Fossils & Ruins

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins