Navigation Links
Researchers declassify dinosaurs as being the great-great-grandparents of birds
Date:7/9/2014

The re-examination of a sparrow-sized fossil from China challenges the commonly held belief that birds evolved from ground-dwelling theropod dinosaurs that gained the ability to fly. The birdlike fossil is actually not a dinosaur, as previously thought, but much rather the remains of a tiny tree-climbing animal that could glide, say American researchers Stephen Czerkas of the Dinosaur Museum in Blanding, Utah, and Alan Feduccia of the University of North Carolina. The study appears in Springer's Journal of Ornithology.

The fossil of the Scansoriopteryx (which means "climbing wing") was found in Inner Mongolia, and is part of an ongoing cooperative study with the Chinese Academy of Geological Sciences. It was previously classified as a coelurosaurian theropod dinosaur, from which many experts believe flying dinosaurs and later birds evolved. The research duo used advanced 3D microscopy, high resolution photography and low angle lighting to reveal structures not clearly visible before. These techniques made it possible to interpret the natural contours of the bones. Many ambiguous aspects of the fossil's pelvis, forelimbs, hind limbs, and tail were confirmed, while it was discovered that it had elongated tendons along its tail vertebrae similar to Velociraptor.

Czerkas and Feduccia say that Scansoriopteryx unequivocally lacks the fundamental structural skeletal features to classify it as a dinosaur. They also believe that dinosaurs are not the primitive ancestors of birds. The Scansoriopteryx should rather be seen as an early bird whose ancestors are to be found among tree-climbing archosaurs that lived in a time well before dinosaurs.

Through their investigations, the researchers found a combination of plesiomorphic or ancestral non-dinosaurian traits along with highly derived features. It has numerous unambiguous birdlike features such as elongated forelimbs, wing and hind limb feathers, wing membranes
'/>"/>

Contact: Renate Bayaz
renate.bayaz@springer.com
49-622-148-78531
Springer
Source:Eurekalert  

Page: 1 2

Related biology news :

1. Study by UC Santa Barbara researchers suggests that bacteria communicate by touch
2. UC Santa Barbara researchers discover genetic link between visual pathways of hydras and humans
3. Researchers attempt to solve problems of antibiotic resistance and bee deaths in one
4. UNH researchers find African farmers need better climate change data to improve farming practices
5. Ottawa researchers to lead world-first clinical trial of stem cell therapy for septic shock
6. Researchers uncover molecular pathway through which common yeast becomes fungal pathogen
7. Researchers print live cells with a standard inkjet printer
8. Columbia Engineering and Penn researchers increase speed of single-molecule measurements
9. Researchers reveal how a single gene mutation leads to uncontrolled obesity
10. Researchers discover novel therapy for Crohns disease
11. New paper by Notre Dame researchers describes method for cleaning up nuclear waste
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Researchers declassify dinosaurs as being the great-great-grandparents of birds
(Date:8/27/2014)... researchers have identified a gene that could help scientists ... protein in the cell membrane of plants that senses ... conservation machinery accordingly. , "It,s similar to a ... at Duke. , The findings, which appear Aug. ... it easier to feed the world,s growing population in ...
(Date:8/27/2014)... requires nerve cells to rearrange existing patterns of activity ... patterns, a study of monkeys has found. The scientists ... electrical activity of brain cell networks. The study was ... "We looked into the brain and may have seen ... said Aaron Batista, Ph.D., an assistant professor at the ...
(Date:8/27/2014)... invasive grass species frequently found in forests has created ... on American toads, a new University of Georgia study ... to the U.S. in the early 1900s, is one ... to more than a dozen states in the past ... and in forests, it can survive in widely diverse ...
Breaking Biology News(10 mins):Water 'thermostat' could help engineer drought-resistant crops 2Scientists plug into a learning brain 2Scientists plug into a learning brain 3More wolf spiders feasting on American toads due to invasive grass, UGA study shows 2More wolf spiders feasting on American toads due to invasive grass, UGA study shows 3
... One fifth of the standard dose of a commonly ... the full dose. This new finding should allow scarce ... in Africa. In a study initiated by the ... research arm of Doctors Without Borders/Mdecins Sans Frontires), and ...
... Institute,s Linheng Li Lab has identified the precise location of ... today in the Advance Online Publication of Nature . ... Institute,s support facilities to develop a new technology ex ... the dynamic behavior of stem cells. This technology enabled the ...
... University,s School of Biomedical Engineering and Science,s Center for Injury ... 2008. The Office of the Deputy Chief of ... the award for research that could ultimately help save eyesight ... The center was selected from 57 applicants from around ...
Cached Biology News:Stowers Institute's Linheng Li Lab expands understanding of bone marrow stem cell niche 2New dummy design and development wins US Department of Defense award 2
(Date:8/27/2014)... 27, 2014 Budding Biomedical Scientists ... University School participated in the Scientific Enrichment ... University’s School of Medicine . , ... unparalleled professional experience in the sciences and brings ... faculty and students for both academic and career ...
(Date:8/26/2014)... , Aug. 26, 2014  NeuroSigma, Inc., a ... to develop bioelectronic technologies, today announced that it has ... U.S. Securities and Exchange Commission relating to a proposed ... of shares to be offered and the price range ... Jefferies LLC will act as the book-running ...
(Date:8/26/2014)... Aug. 26, 2014 An analysis by Replikins, ... all Mers CoV virus strains has revealed ... to 2012.  This conservation and sharing of specific Replikin ... CoV Blocker-Vaccine™ candidate, as it did for the H5N1 ... of which have been found to be effective (1,2). ...
(Date:8/26/2014)... engineers from Singapore has successfully piloted the world,s ... communications. , With the weight of payloads being ... lightweight, low power-consuming, wireless communication system to do ... been a challenge for system designers. , The ... Nanyang Technological University in Singapore launched VELOX-I, which ...
Breaking Biology Technology:Students at Cleveland's University School Conduct Biomedical Research at Case Western Reserve University’s School of Medicine 2ZigBee in the Sky 2
... /PRNewswire/ - Cytochroma today announced that it,has appointed ... Affairs and Quality Assurance. Dr. Engel brings to ... and quality assurance,and will be responsible for directing ... that the Company has appropriate quality,systems in place. ...
... VLP vaccines gains momentum with launch of a Phase ... IIa study of Seasonal Influenza Vaccine, ... ) announced today vaccination of healthy volunteers in a Phase,II ... The Phase IIa randomized, placebo controlled clinical trial will,evaluate the ...
... Sept. 16 Accuray,Incorporated (Nasdaq: ARAY ), a ... its president and chief executive officer, Euan S.,Thomson, Ph.D., ... Sciences,Conference in New York City, on Thursday, September 25, ... live webcast of the presentation will be available online ...
Cached Biology Technology:Cytochroma appoints Steven I. Engel as Vice President of Regulatory Affairs and Quality Assurance 2Novavax Commences Clinical Testing of its Seasonal Influenza VLP Vaccine Candidate 2Novavax Commences Clinical Testing of its Seasonal Influenza VLP Vaccine Candidate 3Novavax Commences Clinical Testing of its Seasonal Influenza VLP Vaccine Candidate 4Novavax Commences Clinical Testing of its Seasonal Influenza VLP Vaccine Candidate 5Accuray Incorporated's CEO to Speak at UBS Global Life Sciences Conference 2
...
... Digital Sight DS-U2 camera controller is the successor ... designed to interface any of the cameras in ... computer through a USB2.0 interface. The DS-U2 transmits ... cumbersome installation by equipping both hub and mass ...
This unique buffer provides a gentle method for removal of primary and secondary antibodies to allow several reprobings on the same membrane. Gentle buffer will not alter the antigen for subsequent i...
...
Biology Products: