Earliest animal footprints uncovered

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	Earliest animal footprints uncovered

pokkets

10-6-2008 10:58 AM

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pokkets says:

Scientists didn't 'know' Pre-Cambrian life was well developed, they just seemed to reach their conclusions with too little evidence

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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/1a4e19bb-83bb-4672-be17-cba781f63355/CEFCF049-2395-4AB2-9216-728972A8B019/" 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.abc.net.au/science/articles/2008/10/06/2382981.htm?site=science&topic=latest" href="http://www.abc.net.au/science/articles/2008/10/06/2382981.htm?site=science&topic=latest" style="font-size: 11px;">www.abc.net.au</a></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://www.abc.net.au/science/articles/2008/10/06/2382981.htm?site=science&topic=latest"><P class="first">Scientists have found the oldest fossilised tracks of a tiny legged animal, providing further evidence that complex creatures existed on earth 570 million years ago.</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.abc.net.au/science/articles/2008/10/06/2382981.htm?site=science&topic=latest"><div align="center"><img src="http://content8.clipmarks.com/blog_cache/www.abc.net.au/img/4C081DA9-332C-41B0-AF8C-EBBD95F31012" alt="fossil footprints" /></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://www.abc.net.au/science/articles/2008/10/06/2382981.htm?site=science&topic=latest"><P>The fossilised trails, thought to belong to a centipede or a leg-bearing worm that lived in the water, were found in sedimentary rocks in Nevada, says <A target="_blank" href="http://www.abc.net.au/science/articles/2008/10/06/http;//www.osu.edu/">Ohio State University</A> geology professor and the study chief author Loren Babcock.</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.abc.net.au/science/articles/2008/10/06/2382981.htm?site=science&topic=latest"><P>The finding, presented to the <A target="_blank" href="http://www.gsa.org/">Geological Society of America</A>'s meeting in Houston, shatters the belief that Pre-Cambrian life on earth was restricted to microbes and simple, multicellular organisms.</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.abc.net.au/science/articles/2008/10/06/2382981.htm?site=science&topic=latest"><P>The tracks, two parallel rows of small dots, each about two millimetres in diameter, date back to the Ediacaran period - 630 to 542 million years ago.</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.abc.net.au/science/articles/2008/10/06/2382981.htm?site=science&topic=latest"><P>They suggest that animals walked using legs at least 30 million years earlier than had been thought.</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.abc.net.au/science/articles/2008/10/06/2382981.htm?site=science&topic=latest"><P>The Cambrian period (543 to 490 million years ago) saw an evolutionary explosion that produced most of the major animal groups we know today.</P></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;">&nbsp;</td><td align="right" style="background:transparent;border-width:0px;padding:0px;width:107px" width="107"><a href="http://clipmarks.com/share/CEFCF049-2395-4AB2-9216-728972A8B019/blog/" title="blog or email this clip"><img src="http://content9.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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