tag:blogger.com,1999:blog-3433304117507034540.post2968214724070667134..comments2024-03-27T10:06:07.100-07:00Comments on The Echinoblog: Starfish with Babies! Brooding Behavior & Pseudocopulation Revealed! ChrisMhttp://www.blogger.com/profile/11784970666468925633noreply@blogger.comBlogger6125tag:blogger.com,1999:blog-3433304117507034540.post-12561406681254774652017-02-22T20:05:05.857-08:002017-02-22T20:05:05.857-08:00Your on top of this ! I fell in love with echinode...Your on top of this ! I fell in love with echinoderm and with specific interest in the Brooding...I have a great collection of fossils out of from Sacramento MTS, N.M. Thanks for your wealth of information. Right on !!Anonymoushttps://www.blogger.com/profile/05414569257502430981noreply@blogger.comtag:blogger.com,1999:blog-3433304117507034540.post-62253941745291606572013-06-28T17:28:20.424-07:002013-06-28T17:28:20.424-07:00KH,
There are no brooding starfish fossils but t...KH,<br /> There are no brooding starfish fossils but there ARE fossils of brooding sea urchins. Mostly from the Mesozoic. Starfish rarely show any morphological brooding mechanisms that easily preserve so, finding one showing brooding would have to be fairly exceptional. Along those lines, Paleozoic forms would be even more difficult, even though excellent preservation for some taxa is present.<br /><br /> As to Xyloplax, well, THAT is a great question! And while I have some thoughts, I have no data. Our knowledge of Xyloplax is pretty limited. Voight's paper speculated that they were actually capable of limited swimming ability. This seems unlikely to me. I honestly suspect however, that its only a matter of time until someone comes upon a bunch of live ones that can be kept alive for a short while.. We shall see.... who knows? perhaps it will be you!<br />ChrisMhttps://www.blogger.com/profile/11784970666468925633noreply@blogger.comtag:blogger.com,1999:blog-3433304117507034540.post-48235556159071312332013-06-28T15:51:59.591-07:002013-06-28T15:51:59.591-07:00A few questions.
First, out of curiosity, do y...A few questions. <br /><br />First, out of curiosity, do you know of any fossilized examples of brooding asteroids, particularly in the Paleozoic stem group?<br /><br />Second, do you have any thoughts on how <i>Xyloplax</i> has achieved such a widespread distribution, while also being a brooder? A large sunken log probably lasts for multiple starfish generations(?), so keeping the larvae from floating away into the woodless abyss makes sense as a reproductive strategy. But how then does <i>Xyloplax</i> spread from log to log? If there is enough wood on the seabed, I assume they could ambulate from wood "island" to wood "island". However, that doesn't explain how they could disperse across multiple oceans...KHnoreply@blogger.comtag:blogger.com,1999:blog-3433304117507034540.post-52789373147792533712013-06-27T14:24:46.223-07:002013-06-27T14:24:46.223-07:00what a great smorgasbord of weird & wonderful!...what a great smorgasbord of weird & wonderful!CNhttps://www.blogger.com/profile/10694485162724342692noreply@blogger.comtag:blogger.com,1999:blog-3433304117507034540.post-10623910735821697252013-06-26T11:47:49.897-07:002013-06-26T11:47:49.897-07:00Now that's unexpected ... Thanks, something ne...Now that's unexpected ... Thanks, something new learned.JJMhttps://www.blogger.com/profile/13404985455733545060noreply@blogger.comtag:blogger.com,1999:blog-3433304117507034540.post-64424592703922081022013-06-26T09:11:06.744-07:002013-06-26T09:11:06.744-07:00Very cool stuff! Thank you.Very cool stuff! Thank you.Sachi Wilsonnoreply@blogger.com