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Oldest Known Spiders Webs Discovered
celestialdancer
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10-31-2009 7:11 AM
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<div style="margin: 12px 0px; font-family: arial; color: #333333; background: #ffffff; border: solid 4px #e5e5e5; width: 100%; clear: left;"><div class="CM_CTB_Content_Wrap" style="margin: 0px; padding: 0px;background-color: #ffffff;"><div style="border-bottom: solid 1px #dcdcdc; white-space: nowrap; margin-bottom: 8px; background-color: #eeeeee ;background-image: url(http://www.clipmarks.com/images/source-bg.gif); background-repeat: repeat-x; height: 24px; line-height: 24px; vertical-align: middle; padding-bottom: 4px; color: #666666; font-size: 10px;" ><a href="http://clipmarks.com/clip-to-blog/" title="see clips that are hot right now"><img src="http://content.clipmarks.com/blog_embed/92fc96f2-3e74-42c6-863b-ce0023646b0e/23E5AB7F-85ED-4A9B-BA71-29E8BAF39940/" alt="" width="19" height="19" border="0" style="vertical-align: middle; margin: 0px 4px; display: inline; border: none; float:none;" /></a>clipped from <a title="http://www.livescience.com/animals/091030-oldest-spider-webs.html" href="http://www.livescience.com/animals/091030-oldest-spider-webs.html" style="font-size: 11px;">www.livescience.com</a></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://www.livescience.com/animals/091030-oldest-spider-webs.html"><P> Silken spider webs dating back some 140 million years have been discovered preserved in amber, scientists announce today. </P></blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://www.livescience.com/animals/091030-oldest-spider-webs.html"><P> The viscous tree sap flowed over the <A href="http://www.livescience.com/php/multimedia/imagedisplay/img_display.php?s=animals&c=news&l=on&pic=091030-orb-web-threads-02.jpg&cap=Silk+threads+formed+by+a+modern+orb-web+garden+spider+are+similar+to+those+of+the+ancient+ones+preserved+in+amber.+Credit:+Martin+Brasier.&title=" linkindex="29">spider webs</A> before hardening and preserving the contents, which were discovered in Sussex, England. Other bits sealed up in the amber included plant matter, insect droppings and ancient microbes. </P></blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://www.livescience.com/animals/091030-oldest-spider-webs.html"><P> "These turn out to be the earliest webs that have ever been incorporated in the fossil record to our knowledge," said lead researcher Martin Brasier, a paleontologist at the University of Oxford. </P></blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://www.livescience.com/animals/091030-oldest-spider-webs.html">Various clues, including <A href="http://www.livescience.com/php/multimedia/imagedisplay/img_display.php?s=animals&c=news&l=on&pic=091030-amber-web-02.jpg&cap=This+light+micrograph+shows+spider+web+threads+coated+with+sticky+droplets+(left+panel)+and+threads+with++helical+twists+(right+panel)+that+were+preserved+inside+amber+for+about+140+million+years.+Credit:+Martin+Brasier.&title=" linkindex="30">threads that were twisted</A> and coated with sticky fluid droplets, suggest the webs were spun by spiders closely related to modern-day orb-web <A href="http://www.livescience.com/topic/spiders" linkindex="31">garden spiders</A>. </blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://www.livescience.com/animals/091030-oldest-spider-webs.html"><P> "These spiders are distinctive and leave little sticky droplets along the spider web threads to trap prey," Brasier said. "We actually have the sticky droplets preserved within the amber." </P></blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://www.livescience.com/animals/091030-oldest-spider-webs.html">The web analysis also gave insights about the spider's diet.</blockquote></div><div style="margin: 0px 6px 6px 4px;"><table style="font-size: 11px;border-spacing: 0px;padding: 0px;" cellpadding="0" cellspacing="0" width="100%"><tr><td style="background:transparent;border-width:0px;padding:0px;"> </td><td align="right" style="background:transparent;border-width:0px;padding:0px;width:107px" width="107"><a href="http://clipmarks.com/share/23E5AB7F-85ED-4A9B-BA71-29E8BAF39940/blog/" title="blog or email this clip"><img src="http://content6.clipmarks.com/images/c2b-foot.png" border="0" alt="blog it" width="107" height="17" style="border-width:0px;padding:0px;margin:0px;" /></a></td></tr></table></div></div>
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