Navigation Links
Newly discovered birdlike dinosaur is oldest raptor ever found in South America

estrial crocodiles and mammals.

"Except for its faunal composition, La Buitrera resembles the Gobi desert in its abundance of fossils and their exquisite state of preservation," Apestegua adds.

A cast of the unusual dinosaur is on public display on the upper floor of The Field Museum in the MacDonald's Preparation Lab. It will be part of Evolving Planet, a permanent exhibition that opens March 10, 2006.

Drifting continents

About 200 million years ago, all of the Earth's land was amassed in one supercontinent called Pangaea. During the Middle and Late Jurassic, Pangaea split into two landmasses. Laurasia, composed of North America, Asia and Europe, drifted to the north; Gondwana, composed of the southern hemisphere continents plus India, drifted to the south.

Until recently, dromaeosaurs (swift-running, bi-pedal, birdlike dinosaurs) have been found only in Cretaceous rocks of Asia and North America, northern continents that were part of Laurasia. (Laurasian dromaeosaurs include the famous Velociraptor from the Gobi Desert, the large Utahraptor from the American West, and the recently discovered Microraptor and Sinornithosaurus from China, both of which preserve amazing traces of bird-like plumage.) This distribution led scientists to believe that dromaeosaurs originated in Laurasia after it drifted apart from Gondwana.

In the last few years, however, a handful of specimens of possible dromaeosaurs or early birds have been discovered on southern continents. Nevertheless, their incomplete preservation led to some ambiguity and debate regarding their identities.

The new discovery provides definitive evidence that dromaeosaurs also lived in South America, which was part of Gondwana. As a result, dromaeosaurs must have originated when all of the continents were still assembled in a single landmass during the Jurassic as far back as 180 million years ago--much earlier than previously thought.

Result
'"/>

Source:Field Museum


Page: 1 2 3 4

Related biology news :

1. Newly-discovered class of genes determines ?and restricts ?stem cell fate
2. Newly discovered virus linked to childhood lung disorders and Kawasaki disease
3. Newly Discovered Compound Blocks Known Cancer-Causing Protein
4. Newly discovered pathway might help in design of cancer drugs
5. Newly Discovered Branding Process Helps Immune System Cells Pick Their Fights
6. Newly discovered protein an important tool for sleeping sickness research
7. Newly discovered genetic disease sheds light on bodys water balance
8. Newly Discovered Role for Heart Response Enzyme May Yield Better Heart Failure Therapy
9. Newly recognized gene mutation may reduce seeds, resurrect plants
10. Fitting in: Newly evolved genes adopt a variety of strategies to remain in the gene pool
11. Newly identified mechanism helps explain why people of African descent are more vulnerable to TB
Post Your Comments:
(Date:2/5/2015)... IRVINE, Calif. , Jan. 27, 2015 ... trusted provider of globally deployed, innovative test ... today announced the delivery of its ... Martin Space Systems Company (LMSSC). GENASYS is ... the demands of mission-critical applications that require ...
(Date:2/5/2015)... Research and Markets ( http://www.researchandmarkets.com/research/6lngtl/global_biometrics ... "Global Biometrics Market (2014-2020): Market Forecast By Technologies, ... to their offering. , In ... is anticipated to overtake North America ... spending towards IT security, government biometric based projects ...
(Date:1/22/2015)... 2015 Research and Markets ( http://www.researchandmarkets.com/research/4trb7t/biometrics_a ) has ... Market Overview" report to their offering. , ... that an individual is who she/he is claiming to be, ... a person,s unique physical characteristics, such as fingerprint, hand or ...
Breaking Biology News(10 mins):Marvin Test Solutions' GENASYS Platform Advances Mission-Critical Aerospace Production Test 2Marvin Test Solutions' GENASYS Platform Advances Mission-Critical Aerospace Production Test 3Marvin Test Solutions' GENASYS Platform Advances Mission-Critical Aerospace Production Test 4Global Biometrics Market (2014-2020): Market Forecast By Technologies, Applications, End Use, Regions and Countries 2Global Biometrics Market (2014-2020): Market Forecast By Technologies, Applications, End Use, Regions and Countries 3Biometrics - A Global Market Overview 2Biometrics - A Global Market Overview 3
... the difficulty of capturing a clear picture of a ... molecules, however, sometimes the motion is exactly what scientists ... pathological protein mis-folding and assembly that seem to underlie ... disease. , Now, chemists at the ...
... to treat Helicobacter pylori (H. pylori) infection, a ... in around 25 percent of cases. A new ... finds that adding a bovine protein called lactoferrin ... results, with fewer of the side effects associated ...
... organisms are at risk from seafloor mining scheduled ... study led by a University of Toronto Mississauga ... near "black smokers"—undersea hydrothermal vent systems that spew ... and support sulphur-loving bacteria and bizarre worm and ...
Cached Biology News:Decoding protein structures helps illuminate cause of diabetes 2Study warns deep-sea mining may pose serious threat to fragile marine ecosystems 2Study warns deep-sea mining may pose serious threat to fragile marine ecosystems 3
(Date:2/27/2015)... Mass. , Feb. 27, 2015 ... of the NCATS rare-diseases portfolio " in ... a new financing technique to reduce the risk ... diseases and potentially unlock new levels of funding ... The product of a unique collaboration between scientists ...
(Date:2/27/2015)... The fully automated supercritical fluidic ... sequentially analyze up to 48 samples utilizing automatic ... of targets by mass spectrometry. , The ... measurement requirements of a wide range of applications, ... and search for disease biomarkers, additives in forming ...
(Date:2/27/2015)... FamilyFarms Group is pleased to announce its valued ... received the 2015 Tomorrow’s Top Producer Horizon Award. The ... 35, who has demonstrated excellence in the business of ... Tomorrow's Top Producer Horizon Award. Every year I look ... and learning from their experiences. It is truly humbling ...
(Date:2/27/2015)... --  PureTech , a science and technology R&D company ... technologies in the healthcare sector, announced today the appointment ... of the Board of Directors of Sanofi, to its ... a pleasure to know Chris for many years and ... together more closely now," said Dr. Robert Langer ...
Breaking Biology Technology:New Financing Technique May Hold Key to Unlocking Funding for Rare Diseases 2New Financing Technique May Hold Key to Unlocking Funding for Rare Diseases 3New Financing Technique May Hold Key to Unlocking Funding for Rare Diseases 4Shimadzu Corporation Launches Nexera UC - The World’s Foremost Unified Chromatography System 2Shimadzu Corporation Launches Nexera UC - The World’s Foremost Unified Chromatography System 3Matt Sims Receives the 2015 Tomorrow’s Top Producer Horizon Award 2Christopher Viehbacher, former CEO of Sanofi, Joins PureTech's Board of Directors 2Christopher Viehbacher, former CEO of Sanofi, Joins PureTech's Board of Directors 3Christopher Viehbacher, former CEO of Sanofi, Joins PureTech's Board of Directors 4
... , STAMFORD, Conn., Sept. ... announced that it has established a Strategic Advisory Board ... within the healthcare industry. The Board will be comprised ... management experience. Each member is expected to supplement Cowen ...
... Attorneys ... ... Rudnick, an international law firm, today announced that a veteran Intellectual Property ("IP") team ... years of combined experience, the team includes Partners Thomas C. Meyers and Robert J. ...
... Kensey Nash Corporation (Nasdaq: KNSY ) is scheduled ... the Grand Hyatt New York in New York City on Monday, ... Kensey Nash,s President & CEO, will deliver the Company,s presentation, beginning ... of the Kensey Nash presentation at the UBS Global Life Sciences ...
Cached Biology Technology:Cowen Healthcare Royalty Partners Establishes Strategic Advisory Board 2Cowen Healthcare Royalty Partners Establishes Strategic Advisory Board 3Cowen Healthcare Royalty Partners Establishes Strategic Advisory Board 4Veteran Intellectual Property Team Joins Brown Rudnick 2
AVOID FREEZE/THAW CYCLES. Recognizes the UCP-2 protein....
... bridges the gap between the 500 l ... combines the speed of the classic Vivaspin ... area for superior recoveries from very dilute ... PES, Cellulose Triacetate membranes, Vivaspin 2 offers ...
... VAMP-2 (Vesicle-Associated Membrane Protein 2, ... not share homology with any ... It is expected that the ... human, Macaca multata and bovine ...
... Transporter 2 (VMAT2). An antibody made to ... band at ~55 kDa in postnuclear supernatants ... in wild type cells (2). Some additional ... were also detected and remain unaffected by ...
Biology Products: