Navigation Links
New evidence of dinosaurs' role in the evolution of bird flight
Date:11/21/2012

A new study looking at the structure of feathers in bird-like dinosaurs has shed light on one of nature's most remarkable inventions how flight might have evolved.

Academics at the Universities of Bristol, Yale and Calgary have shown that prehistoric birds had a much more primitive version of the wings we see today, with rigid layers of feathers acting as simple airfoils for gliding.

Close examination of the earliest theropod dinosaurs suggests that feathers were initially developed for insulation, arranged in multiple layers to preserve heat, before their shape evolved for display and camouflage.

As evolution changed the configuration of the feathers, their important role in the aerodynamics and mechanics of flight became more apparent.

Natural selection over millions of years ultimately modified dinosaurs' forelimbs into highly-efficient, feathered wings that could rapidly change its span, shape and area a key innovation that allowed dinosaurs to rule the skies.

This basic wing configuration has remained more or less the same for the past 130 million years, with bird wings having a layer of long, asymmetrical flight feathers with short covert feathers on top. They are able to separate and rotate these flight feathers to gain height, change direction and even hover.

This formation allows birds to move in such a way as to produce both lift and thrust simultaneously a capability that man, with the help of technology, is still trying to successfully imitate.

The research, published today [21 November] in Current Biology, looked at the dinosaur Anchiornis huxleyi and the Jurassic bird Archaeopteryx lithographica. The latter is 155 million years old and widely considered to be the earliest known bird, presenting a combination of dinosaur and bird characteristics.

Their wings differed from modern day birds in being composed of multiple layers of long feathers, appearing
'/>"/>

Contact: Philippa Walker
philippa.walker@bristol.ac.uk
44-117-928-7777
University of Bristol
Source:Eurekalert

Page: 1 2

Related biology news :

1. More evidence needed to support use of autism interventions
2. Mobile phones and wireless networks: No evidence of health risk found
3. Researchers find first evidence for a genetic cause for Barretts oesophagus
4. First photo evidence of snub-nosed monkey species in China
5. Alpine Fault study shows new evidence for regular magnitude 8 earthquakes
6. Caltech researchers find evidence of link between immune irregularities and autism
7. Cancer Cell article shows first evidence for targeting of Pol I as new approach to cancer therapy
8. First direct evidence that elemental fluorine occurs in nature
9. Study provides first evidence of coevolution between invasive, native species
10. New evidence in fructose debate: Could it be healthy for us?
11. DNA evidence shows that marine reserves help to sustain fisheries
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:8/20/2014)... salty aroma of sunscreen and seawater signals a relaxing ... that the idyllic beach vacation comes with an environmental ... into the sea, they can become toxic to some ... course for many other marine animals. Their study appears ... . , Antonio Tovar-Sanchez and David Snchez-Quiles point out ...
(Date:8/20/2014)... A new gene therapy developed by researchers at the ... to protect mice from a life-threatening heart condition caused ... therapeutic avenue," said Yi Lai, Ph.D., the leading author ... MU School of Medicine,s Department of Molecular Microbiology and ... hope this could lead to a treatment for people ...
(Date:8/20/2014)... , Aug. 20, 2014  The second annual ... in Tampa, Florida on ... with Steven Rahman, Director, Technology and Strategy at Samsung, ... Experian. The theme of this year,s event is ... "Biometrics UnPlugged: Mobility at the ...
Breaking Biology News(10 mins):Gene therapy protects mice from lethal heart condition, MU researchers find 2Biometrics UnPlugged: Mobility at the Crossroads of Commerce & Privacy to Feature Interactive Sessions with Samsung and Experian 2
... (UW) have reported for the first time that mammals can ... retinas. Located in the back of the eye, the retina,s ... to the brain. The findings on retina self-repair in ... of the Proceedings of the National Academy of Sciences ...
... Institute of Technology has invited a longtime University of ... and presenting seminars on its campus. Fazle Hussain, ... Engineering, was the sole recipient of the Gordon and ... for Caltech,s division of engineering and applied sciences. The ...
... University have answered a fundamental question of how important ... function, a finding that could provide a new target ... diseases. In a study published this month in ... show for the first time that the specific movements ...
Cached Biology News:Mammals can be stimulated to regrow damaged inner retina nerve cells 2Mammals can be stimulated to regrow damaged inner retina nerve cells 3Celebrated UH researcher invited to Caltech as distinguished scholar 2Scientists present 'moving' theory behind bacterial decision-making 2
(Date:8/20/2014)... JOSE, Calif. , Aug. 20, 2014 /PRNewswire-iReach/ ... highlights the transformative collaboration between the school,s bioengineering ... As part of the Intel® Software Academic Program, ... computer sciences and the human body.  ... The study exhibits the work of Dr. ...
(Date:8/19/2014)... Md. (PRWEB) August 19, 2014 ... liquid chromatography systems, Prominence-i and Nexera-i, adding to ... systems. Combining excellent functionality, an intuitive operating environment, ... and a more efficient workflow for conventional to ... feature innovative, intuitive and intelligent design so users ...
(Date:8/19/2014)... Jolla, CA (PRWEB) August 19, 2014 ... toll Parkinson’s disease can take on an individual. ... extremities, decreased facial expression, problems swallowing and severe depression. ... to the dying off of dopamine producing neurons of ... themselves from a disease that slowly and progressively gets ...
(Date:8/19/2014)... , Aug. 19, 2014   Synthetic Biologics, ... developing novel anti-infective biologic and drug programs targeting ... announced today that its novel C. difficile ... 54 th Interscience Conference on Antimicrobial Agents ... Washington D.C. Synthetic Biologics, ...
Breaking Biology Technology:Intel and University of San Diego Bioengineering Department Release Case Study on Health Sciences Research 2Shimadzu’s New i-Series Integrated Liquid Chromatography Systems Provide Laboratories Wider Range of Analytical Capabilities 2Shimadzu’s New i-Series Integrated Liquid Chromatography Systems Provide Laboratories Wider Range of Analytical Capabilities 3As We Mourn Robin Williams’ Passing, His Death Sheds Light on Patients Struggling with Parkinson’s Disease 2As We Mourn Robin Williams’ Passing, His Death Sheds Light on Patients Struggling with Parkinson’s Disease 3Synthetic Biologics Announces Late-Breaking Poster Presentation for C. difficile Program at 54th ICAAC 2Synthetic Biologics Announces Late-Breaking Poster Presentation for C. difficile Program at 54th ICAAC 3Synthetic Biologics Announces Late-Breaking Poster Presentation for C. difficile Program at 54th ICAAC 4
... CITY, Calif. and TOKYO, May 7, 2012  Coherus ... Co. Ltd. (hereafter, Daiichi Sankyo; TSE 4568) announced ... develop and commercialize biosimilar forms of etanercept and ... (Logo: http://photos.prnewswire.com/prnh/20120507/SF01448LOGO ) Under ...
... Neurosciences, Inc. (OTCBB:ILNS), a biopharmaceutical company engaged in ... for the treatment of Alzheimer,s and other neurological ... Alzheimer,s disease development pipeline. The new programs are based ... of tau protein, which Intellect intends to develop ...
... risk of developing diabetes, a study suggests. Scientists have ... to insulin, the hormone that controls blood sugar levels. ... testosterone levels in fat tissue can be instrumental in the ... the body. Low testosterone levels are linked to obesity, a ...
Cached Biology Technology:Daiichi Sankyo And Coherus BioSciences Establish Strategic Collaboration To Develop And Commercialize Biosimilar Candidates 2Intellect Neurosciences Adds Two New Tau Programs to its Alzheimer's Disease Development Pipeline 2Intellect Neurosciences Adds Two New Tau Programs to its Alzheimer's Disease Development Pipeline 3Intellect Neurosciences Adds Two New Tau Programs to its Alzheimer's Disease Development Pipeline 4Low testosterone levels could raise diabetes risk for men 2
... is making flow cytometry accessible to anyone in ... the latest addition to Guavas on-demand microcapillary flow ... easy to use, surprisingly affordable, very compact, and ... detection. The Guava EasyCyte Mini has all of ...
... to hold up to 6 strain chambers with ... to use design ensures that cells grow over ... or compression. This unit allows you to control ... produce 64 unique strain settings. The instrument fits ...
... unique combination of Coulter volume and ... and accurate cell counting. This flow ... UV, allowing flexible fluorochrome selection for ... only achievable with larger, more expensive ...
... The Cytomics FC 500 Series ... equipped with the most advanced ... Series delivers flexible testing, powerful ... features that help researchers optimize ...
Biology Products: