tag:blogger.com,1999:blog-140938929136406282.post7986116705066510878..comments2023-11-18T15:42:20.251-05:00Comments on DinoGoss: The Tale of the "Sail"Matt Martyniukhttp://www.blogger.com/profile/04220900229537564466noreply@blogger.comBlogger2125tag:blogger.com,1999:blog-140938929136406282.post-21588125072775747982013-09-05T12:52:07.931-04:002013-09-05T12:52:07.931-04:00I've never seen one that did, but then again I...I've never seen one that did, but then again I've never really looked, so I hedged just in case this is something that's ever been recovered...Matt Martyniukhttps://www.blogger.com/profile/04220900229537564466noreply@blogger.comtag:blogger.com,1999:blog-140938929136406282.post-85431050375950058972013-09-05T12:46:32.961-04:002013-09-05T12:46:32.961-04:00"[M]ost phylogenetic analyses nowadays sugges..."[M]ost phylogenetic analyses nowadays suggest that these two types of sail-backed synapsids do not form a natural group with each other."<br /><br />Has there EVER been one that did? Even pre-cladistic taxonomies always kept them separate. <i>Dimetrodon</i> has some very close relatives (e.g., <i>Sphenacodon</i>) that lack sails, so the case for convergence seems pretty strong. (Sorry, no sailback ancestors for us!)Mike Keeseyhttps://www.blogger.com/profile/00147156174467903264noreply@blogger.com