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tethys marsh evolution Brain cells of whales similar to humans
shankargallery
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5-3-2007 10:53 AM
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Whales are cetaceans and they diverged from land mammals between 50 to 60 million years ago.Brain cells of whales similar to humans
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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/e9815f84-3d45-4efa-b91a-d6708a76bbdf/0A397A24-0A5D-4A40-8890-5FCAD53F1FF9/" 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.smm.org/boghopper/sciencebriefs.html" href="http://www.smm.org/boghopper/sciencebriefs.html" style="font-size: 11px;">www.smm.org</a></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://www.smm.org/boghopper/sciencebriefs.html">Whales are cetaceans and they diverged from land mammals between 50 to 60 million years ago. They adapted fully to a water habitat and learned echolocation, with remarkaable hearing and communication abilities, as well as having developed a complex social organization. The brain structure of the humpback whale (<I>Megaptera novaeangliae</I>) was studied by Patrick Hof at the Mount Sinai School of Medicine, NY, and Estel Van Der Gucht at the New York Consortium in Evolutionary Primatology. They report that the humpback whale has a kind of brain cell that is seen only in humans, the great apes, and other cetaceans such as dolphins, making whales to be more intelligent than previously thought. The brain cell, called a spindle neuron, was found in the cortex in areas where it is found in humans and the great apes. They state that this may be a case of parallel evolution. This finding may help explain some behavioral patterns in whales, especially intricate communication skills.</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/0A397A24-0A5D-4A40-8890-5FCAD53F1FF9/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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