tag:blogger.com,1999:blog-8304928500646903522.post6128054643154907783..comments2024-03-28T00:11:33.489-04:00Comments on bensozia: Shark EmbryoJohnhttp://www.blogger.com/profile/01037215533094998996noreply@blogger.comBlogger1125tag:blogger.com,1999:blog-8304928500646903522.post-42682453490395040642018-11-30T15:55:32.929-05:002018-11-30T15:55:32.929-05:00"The pattern is known to drive the developmen..."The pattern is known to drive the development of feathers in birds, but this discovery hints at a common evolutionary origin much farther down the tree of life, up to 450 million years ago."<br /><br />Well, sure - if we go far enough back, presumably everything shares a common evolutionary origin.<br /><br />Or perhaps it could just be one of countless cases of convergent evolution. Not sure which is the more remote possibility.G. Verlorennoreply@blogger.com