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:7/29/2014)... the wrong food at a restaurant, don,t blame yourself; blame ... do with what you want and more to do with ... and the selections of over 300 diners, the Cornell study ... Management showed that when it comes to what you ... on the menu and how you imagine it will taste. ...
(Date:7/29/2014)... locomotion. Swimming microorganisms, such as bacteria and spermatozoa, are ... viscous forces exerted by the surrounding fluid. Such ... have found that the direction of propulsion made possible ... a viscoelastic fluid. These findings have been published in ... Alternative Energies and Atomic Energy Commission (CEA), in Le ...
(Date:7/29/2014)... Helping people recover from the debilitating effects of ... requires deep knowledge of neurophysiology as well as ... options and outcomes has been the primary focus ... biomedical engineering, since he joined the NJIT faculty ... whose significance is underscored by substantial funding from ...
Breaking Biology News(10 mins):Menu secrets that can make you slim by design 2Optimum inertial self-propulsion design for snowman-like nanorobot 2Continuing the quest for better stroke therapies 2Continuing the quest for better stroke therapies 3
... " Vaccine " published a paper by the Massachusetts based ... important in neurodegenerative Huntington,s disease can be safely used as ... component of every vaccine is an antigen that elicits specific ... Search for better antigens is one of the most ...
... research into heavy metal contaminant levels in dolphins from ... high mercury levels may be a contributing factor to ... Biological Sciences have confirmed levels of mercury found in ... negative health and mental effects and were higher than ...
... Ill. Caloric intake negatively influences sleep patterns in ... be presented on Tuesday at SLEEP 2008, the 22nd ... The study, authored by Ion Zalcman, of Federal ... healthy volunteers between 20-45 years of age. Food ...
Cached Biology News:A protein sequence associated with Huntington’s disease may become life-saving vaccine component 2Mercury contamination found in stranded Victorian dolphins 2Caloric intake negatively influences healthy adults' sleep patterns 2
(Date:7/29/2014)... researchers has created a new way of manufacturing ... surfaces, made by self-assembly of carbon nanotubes, could ... controllable mechanical stiffness and strength, or the ability ... "We have demonstrated that mechanical forces can be ... microstructures, and that we can independently control ...
(Date:7/29/2014)... 2014  Discovery Laboratories, Inc. (Nasdaq: DSCO),  a ... standard of respiratory critical care, will report its second ... before the open of the U.S. financial markets.  ... live teleconference and webcast at 9:00 a.m. Eastern Time ... Labs, management will discuss the 2014 second quarter ...
(Date:7/29/2014)... (PRWEB) July 29, 2014 TransVac Solutions, ... linen collection and transport solutions for hospitals, will be ... Healthcare Engineering (ASHE) Annual Conference & Technical Exhibition Aug. ... present its technology for making hospitals cleaner, reducing infection ... over the hospital’s life cycle. Staff will be ...
(Date:7/29/2014)... DisasterTalk is a texting app which allows users ... or other transmitters are down. The app can transmit messages ... need for any Wi-Fi, and can also use a meshworth ... has launched as a housing report finds that ... of being affected by natural disasters. With the risk hitting ...
Breaking Biology Technology:A new way to make microstructured surfaces 2Discovery Labs to Report 2014 Second Quarter Financial Results and Hold Conference Call on Tuesday, August 5, 2014 at 9:00 a.m. Eastern Time 2TransVac Presents Cost Saving Technology at ASHE Conference for Keeping Hospitals Cleaner 2DisasterTalk App Could Save Lives as Report Reveals 8% of US Homes at Very High Risk of Natural Disaster 2
... organizations talk a good game about interpersonal skills, influence and ... a pretty clear chain of command that runs right down ... (DoIT) at the University of Wisconsin-Madison, Annie Stunden ... many more staff with IT responsibilities in other departments on ...
... this year intend to provide more mentorship to the ... during the inaugural competition in 2004. , ,Now that the ... a panel of dozens of judges will narrow the 200 ... for a further round of elimination. Sometime in March they ...
... the important impact that generic pharmaceutical drugs are having ... and growth spurs Big Pharma to invest heavily in ... having any kind of medical health insurance in the ... Canada being rapidly shut by U.S. pharmaceutical companies, the ...
Cached Biology Technology:Annie Stunden, CIO at the University of Wisconsin-Madison 2Annie Stunden, CIO at the University of Wisconsin-Madison 3Annie Stunden, CIO at the University of Wisconsin-Madison 4Coaching available for business-plan contest survivors 2Pharmas will be forced into generic-drug strategy 2Pharmas will be forced into generic-drug strategy 3
Anti 4-hydroxy-2-hexenal (4-HHE) Monoclonal Antibody (HNEJ-2)...
... EnVision™ G|2 Doublestain System is ... generation visualization kit. The kit is ... the simultaneous detection of two different ... is compatible with suitably diluted rabbit ...
... this enzyme exists predominantly as XDH which ... a critical plasma antioxidant. During ischemia, ... radical producing XO by oxidation of essential ... cleavage of the amino-terminus. AO has ...
Mouse monoclonal antibody to Lats2....
Biology Products: