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Oldest dinosaur burrow discovered
JohnWaterman
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7-12-2009 8:35 AM
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7-12-2009
7:50 PM
tanyamm
Very interesting.
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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://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/181f4b48-2f3c-4795-bb73-fbaf8e227a06/4E6793C5-3C0D-4693-A043-DBA797A95547/" 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://news.bbc.co.uk/earth/hi/earth_news/newsid_8144000/8144199.stm" href="http://news.bbc.co.uk/earth/hi/earth_news/newsid_8144000/8144199.stm" style="font-size: 11px;">news.bbc.co.uk</a></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://news.bbc.co.uk/earth/hi/earth_news/newsid_8144000/8144199.stm"><P class="first"><B>The world's oldest dinosaur burrows have been discovered in Australia.</B></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://news.bbc.co.uk/earth/hi/earth_news/newsid_8144000/8144199.stm"><div align="center"><img src="http://content9.clipmarks.com/blog_cache/news.bbc.co.uk/img/D85BC554-F66E-47D5-9497-379169157F48" alt="Dinosaur burrow at Knowledge Creek, Victoria, Australia" /></div></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://news.bbc.co.uk/earth/hi/earth_news/newsid_8144000/8144199.stm"><DIV class="cap">A burrow photographed from above, showing a cross section, with the entrance on the right side and chamber on the left</DIV></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://news.bbc.co.uk/earth/hi/earth_news/newsid_8144000/8144199.stm"><P>Three separate burrows have been found in all, the biggest 2m long, each built to a similar design and just big enough to hold the body of a small dinosaur. </P><P>The 106-million-year-old burrows, the first to be found outside of North America, would have been much closer to the South Pole when they were created. </P><P>That supports the idea that dinosaurs living in cold, harsh climates burrowed underground to survive. </P><P>The only other known dinosaur burrow was discovered in 2005 in Montana, US. </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://news.bbc.co.uk/earth/hi/earth_news/newsid_8144000/8144199.stm"><P>"I was scanning the outcrop for trace fossils, and was very surprised to see the same type of structure I had seen in Cretaceous rocks of Montana the previous year," says Martin. </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://news.bbc.co.uk/earth/hi/earth_news/newsid_8144000/8144199.stm">That original structure turned out to be the burrow of <I>O. cubicularis</I></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://news.bbc.co.uk/earth/hi/earth_news/newsid_8144000/8144199.stm">calculates that an animal around 10kg in size would have made each burrow</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/4E6793C5-3C0D-4693-A043-DBA797A95547/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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