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Scientists find Dinosaur-Age Spider Web in Amber

 
 
Thomas
 
Reply Mon 2 Nov, 2009 07:05 pm
Pretty cool, no?

Today, Wired wrote:
The world’s oldest known spider web has been discovered on a beach in Sussex, England, trapped inside an ancient chunk of amber.

Scientists found the rare amber fossil in December, and have now confirmed that it contains remnants of spider silk spun roughly 140 million years ago by an ancestor of modern orb-weaving spiders. After slicing the amber into thin sections and examining each piece under a high-powered microscope, the researchers discovered that the ancient silk threads share several features common to modern spider webs, including droplets of sticky glue used to hold the web together and capture prey.


http://i286.photobucket.com/albums/ll88/guthobla/A2K/spider_in_amber-copy.jpg

Read the whole article in Wired
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littlek
 
  1  
Reply Mon 2 Nov, 2009 08:01 pm
So... I always wondered this - does the amber look like the above picture while it's laying on the beach? What does raw fossilized amber look like (so I can keep my eyes open)?
farmerman
 
  1  
Reply Mon 2 Nov, 2009 08:03 pm
@Thomas,
I wonder what the last thing was that went through that spiders mind when he caught that big gloobie of sap in his web??

HOLY **** THIS IS GONNA FEED ALL MY.....((glurk))
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Thomas
 
  1  
Reply Mon 2 Nov, 2009 08:17 pm
@littlek,
I haven't seen raw amber myself. But my late grandmother grew up in East Prussia, where they had wild amber on a beach. She once said it looks utterly unremarkable, kind of like turbid rock candy.
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farmerman
 
  1  
Reply Mon 2 Nov, 2009 08:18 pm
@littlek,
What you find on the beach is anything from browinsh to golden yellows and the amber looks like a hunk of plastic or a busted beer bottle.
The piece in the pic is a cabachon done by cutting a slab of the amber and then gluing it to a "dop" stick and polishing on water wheel stones and buffing. I used to do sample prep years ago as a grad intern at a national museum prep labs . Wed cut the mineral "thin sections" to 30 micron slabs that are glued onto a microscope slide with a type of souperglue or Canada Balsam. The optics of the microscopes use a series of polarizers and rotating fields of view. The colors that develop when light passes through the minerals at the 30 micron thickness transmits speciifc wavelenghths that are dependent upon the minerals composition. Its very cool and if youve been smoking some doobies the colors of minerals under a polarizing microscope are fantastic.
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NickFun
 
  1  
Reply Mon 2 Nov, 2009 10:26 pm
So what? In my backyard this morning I find some brand new ones!
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dlowan
 
  1  
Reply Mon 2 Nov, 2009 10:59 pm
@Thomas,
Quote:
Pretty cool, no?


Absoferkinglutely!!!!!!

I love this stuff.

To think spiders' bums have changed so little in all that time.

I wonder if they infected dinosauria ankles with their dirty little nippers back then????????
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