Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

GW Ph.D. candidate and UCL grad student discover new species of raptor dinosaur

19.03.2010
Near complete skeleton will help further describe pre-historic relatives

A new species of raptor dinosaur being named Linheraptor exquisitus has been discovered by George Washington University doctoral candidate Jonah Choiniere and Michael D. Pittman, a graduate student at University College London (UCL).

The exceptionally well-preserved, nearly complete skeleton is a relative of the well-known species Velociraptor, and will help scientists further describe the physical appearance of other closely-related dinosaurs within the Dromaeosauridae family. The research, led by Xu Xing of the Chinese Academy of Sciences' Institute of Vertebrate Paleontology and Paleoanthropology, will be published in the March 19, 2010, issue of Zootaxa.

"I only saw the tip of the claw sticking out of a cliff face, and it was a total surprise that the whole skeleton was buried deeper in the rock," said Mr. Choiniere. "This fossil is going to tell us a lot about the evolution of the skeleton in the group that includes Velociraptor."

At approximately eight feet long and 50 pounds, the researchers believe Linheraptor would have been a fast, agile predator that preyed on small horned dinosaurs related to Triceratops. Like other dromaeosaurids, it possessed a large, highly curved claw on the foot, which may have been used to capture prey. Within the Dromaeosauridae family, Linheraptor is most closely related to another recently discovered species Tsaagan mangas. The head and neck of the Tsaagan skeleton was discovered in Mongolia in 1993 by James Clark, the Ronald B. Weintraub Professor of Biology at The George Washington University's Columbian College of Arts and Sciences. Tsaagan's skull indicates that it is more primitive than Velociraptor, and the skeleton of the new species should help reconstruct the series of evolutionary changes within the Dromaeosauridae.

"This is a really beautiful fossil and it documents a transitional stage in dromaeosaurid evolution," said Dr. Xu.

Linheraptor was found by the researchers in approximately 75 million year-old red sandstone rocks during a 2008 field expedition in Inner Mongolia, China. It is the fifth dromaeosaurid discovered in these rocks, which are famous for their preservation of uncrushed, complete skeletons. These red sandstones are best known from the Flaming Cliffs field site in outer Mongolia, the location where Velociraptor was discovered and dinosaur eggs and nests were first found.

"The original Tsaagan find was very intriguing, and this discovery should really help us flesh out what these animals looked like," said Dr. Clark.

Dromaeosauridae is a family of bird-like theropod dinosaurs that lived during the Cretaceous Period. In addition to Linheraptor and Velociraptor, theropod dinosaurs include charismatic meat-eaters like Tyrannosaurus rex and modern birds.

This research was funded by the U.S. National Science Foundation and the Chinese National Science Foundation, the Jurassic Foundation, the Geological Society of London and The George Washington University.

Mr. Choiniere is a doctoral student of Dr. Clark's and first accompanied Dr. Clark on his excavations in China in 2005. Though this discovery is Mr. Choiniere's first significant fossil find, he was the lead author of the recent Science article, "A Basal Alvarezsauroid Theropod from the Early Late Jurassic of Xinjiang, China." Mr. Pittman is a doctoral student of Dr. Paul Upchurch and Dr. John R. Hutchinson and has worked with Chinese scientists since 2006.

The article, "A new dromaeosaurid (Dinosauria: Theropoda) from the Upper Cretaceous Wulansuhai Formation of Inner Mongolia, China," appears in the March 19, 2010, issue of Zootaxa. Zootaxa is an international journal for animal taxonomists.

Established in 1821 in the heart of the nation's capital, GW's Columbian College of Arts and Sciences is the largest of the University's academic units with more than 40 departments and programs for undergraduate, graduate and professional studies. Columbian College provides the foundation for GW's commitment to education, research and outreach, providing courses ranging from the traditional disciplines to a wide variety of interdisciplinary and applied fields for students in all the undergraduate degree programs across the University. An internationally recognized faculty and active partnerships with prestigious research institutions place Columbian College at the forefront in advancing policy, enhancing culture and transforming lives through scientific research and discovery.

In the heart of the nation's capital with additional programs in Virginia, The George Washington University was created by an Act of Congress in 1821. Today, GW is the largest institution of higher education in the District of Columbia. The University offers comprehensive programs of undergraduate and graduate liberal arts study, as well as degree programs in medicine, public health, law, engineering, education, business and international affairs. Each year, GW enrolls a diverse population of undergraduate, graduate and professional students from all 50 states, the District of Columbia, and more than 130 countries.

Founded in 1826, UCL was the first English university established after Oxford and Cambridge, the first to admit students regardless of race, class, religion or gender and the first to provide systematic teaching of law, architecture and medicine. UCL is the fourth-ranked university in the 2009 THES-QS World University Rankings. UCL alumni include Marie Stopes, Jonathan Dimbleby, Lord Woolf, Alexander Graham Bell and members of the band Coldplay. UCL currently has over 12,000 undergraduate and 8,000 postgraduate students. Its annual income is over $900 million.

Photos are available upon request. Please contact Emily Cain at eecain@gwu.edu or (202) 994-3087.

Emily Cain | EurekAlert!
Further information:
http://www.gwu.edu

More articles from Life Sciences:

nachricht Cryo-electron microscopy achieves unprecedented resolution using new computational methods
24.03.2017 | DOE/Lawrence Berkeley National Laboratory

nachricht How cheetahs stay fit and healthy
24.03.2017 | Forschungsverbund Berlin e.V.

All articles from Life Sciences >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Giant Magnetic Fields in the Universe

Astronomers from Bonn and Tautenburg in Thuringia (Germany) used the 100-m radio telescope at Effelsberg to observe several galaxy clusters. At the edges of these large accumulations of dark matter, stellar systems (galaxies), hot gas, and charged particles, they found magnetic fields that are exceptionally ordered over distances of many million light years. This makes them the most extended magnetic fields in the universe known so far.

The results will be published on March 22 in the journal „Astronomy & Astrophysics“.

Galaxy clusters are the largest gravitationally bound structures in the universe. With a typical extent of about 10 million light years, i.e. 100 times the...

Im Focus: Tracing down linear ubiquitination

Researchers at the Goethe University Frankfurt, together with partners from the University of Tübingen in Germany and Queen Mary University as well as Francis Crick Institute from London (UK) have developed a novel technology to decipher the secret ubiquitin code.

Ubiquitin is a small protein that can be linked to other cellular proteins, thereby controlling and modulating their functions. The attachment occurs in many...

Im Focus: Perovskite edges can be tuned for optoelectronic performance

Layered 2D material improves efficiency for solar cells and LEDs

In the eternal search for next generation high-efficiency solar cells and LEDs, scientists at Los Alamos National Laboratory and their partners are creating...

Im Focus: Polymer-coated silicon nanosheets as alternative to graphene: A perfect team for nanoelectronics

Silicon nanosheets are thin, two-dimensional layers with exceptional optoelectronic properties very similar to those of graphene. Albeit, the nanosheets are less stable. Now researchers at the Technical University of Munich (TUM) have, for the first time ever, produced a composite material combining silicon nanosheets and a polymer that is both UV-resistant and easy to process. This brings the scientists a significant step closer to industrial applications like flexible displays and photosensors.

Silicon nanosheets are thin, two-dimensional layers with exceptional optoelectronic properties very similar to those of graphene. Albeit, the nanosheets are...

Im Focus: Researchers Imitate Molecular Crowding in Cells

Enzymes behave differently in a test tube compared with the molecular scrum of a living cell. Chemists from the University of Basel have now been able to simulate these confined natural conditions in artificial vesicles for the first time. As reported in the academic journal Small, the results are offering better insight into the development of nanoreactors and artificial organelles.

Enzymes behave differently in a test tube compared with the molecular scrum of a living cell. Chemists from the University of Basel have now been able to...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

International Land Use Symposium ILUS 2017: Call for Abstracts and Registration open

20.03.2017 | Event News

CONNECT 2017: International congress on connective tissue

14.03.2017 | Event News

ICTM Conference: Turbine Construction between Big Data and Additive Manufacturing

07.03.2017 | Event News

 
Latest News

Argon is not the 'dope' for metallic hydrogen

24.03.2017 | Materials Sciences

Astronomers find unexpected, dust-obscured star formation in distant galaxy

24.03.2017 | Physics and Astronomy

Gravitational wave kicks monster black hole out of galactic core

24.03.2017 | Physics and Astronomy

VideoLinks
B2B-VideoLinks
More VideoLinks >>>