feathers in amber

baddogma · Posted: Wed Aug 13, 2008 9:11 am Post subject: feathers in amber

http://images.google.com/imgres?imgurl=http://news.nationalgeographic.com/news/bigphotos/images/080311-amber-feathers_big.jpg&imgrefurl=http://markitscience.blogspot.com/2008/03/dino-feather.html&h=347&w=461&sz=62&hl=en&start=9&tbnid=TbsZ1iRebHodSM:&tbnh=96&tbnw=128&prev=/images%3Fq%3Ddinosaur%2Bfeathers%26gbv%3D2%26hl%3Den%26newwindow%3D1%26safe%3Dactive

Dunno why the web page icon isn't working......
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baddogma · Posted: Wed Aug 13, 2008 9:18 am Post subject:

http://images.google.com/imgres?imgurl=http://msnbcmedia4.msn.com/j/msnbc/Components/Photos/070920/070920_fossil_feather_02.widec.jpg&imgrefurl=http://today.msnbc.msn.com/id/20891903/&h=409&w=298&sz=24&hl=en&start=16&tbnid=kktU6VAr8mBl6M:&tbnh=125&tbnw=91&prev=/images%3Fq%3Ddinosaur%2Bfeathers%26gbv%3D2%26hl%3Den%26newwindow%3D1%26safe%3Dactive
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baddogma · Posted: Wed Aug 13, 2008 11:55 am Post subject:

Although the authors do not exclude that these fragments could have originated from an early bird featuring primitive feathers, they consider it more probable that they actually belonged to a feathered dinosaur.

By using X-ray synchrotron holotomography developed at the European Light Source, Paul Tafforeau succeeded in imaging these fragments in three dimensions at high resolution, revealing details smaller than one micrometre. He also detected numerous other interesting features within the block of amber. These investigations provided the final proof of the partial fusion of barbs with the shaft. They also revealed that this shaft is flattened, which indicates the formation of the planar form of feathers, a pre-requisite for using them to fly.

This breakthrough is the first fossil evidence of an intermediate stage in the evolutionary diversification of feathers. Discovery and then investigations of many more fossils is necessary to fully understand how and when birds gained the feathers permitting them to fly.

http://images.google.com/imgres?imgurl=http://www.esrf.eu/news/general/amber/feather_sm.jpg&imgrefurl=http://www.esrf.eu/news/general/amber&h=369&w=450&sz=51&hl=en&start=230&tbnid=WvAPmRvWk_3cQM:&tbnh=104&tbnw=127&prev=/images%3Fq%3Ddinosaur%2Bfeathers%26start%3D220%26gbv%3D2%26ndsp%3D20%26hl%3Den%26newwindow%3D1%26safe%3Dactive%26sa%3DN
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greyghost · Posted: Wed Aug 13, 2008 12:03 pm Post subject:

Can you link a longer URL post please? I want to see if you can top that...
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baddogma · Posted: Wed Aug 13, 2008 12:05 pm Post subject:

Why isn't the icon working?....all I get every time is an error. It used to work for me...sorry....
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chookrooter · Posted: Thu Aug 14, 2008 7:26 pm Post subject:

That's fascinating: I seem to remember reading over 20 years ago the suggestion of a link between dinosaurs and birds.

coloringzebras · Posted: Thu Aug 14, 2008 8:26 pm Post subject:

loads of dna?

monkeybyte · Posted: Thu Aug 14, 2008 8:56 pm Post subject:

or a priceless hunk of amber, to be sure.
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