Rockaholic Posted July 11, 2011 Share Posted July 11, 2011 (edited) I believe this is a carpoid but from the research I've done it seems that it would be unusual to find a carpoid in a Mississippian formation. Edited July 11, 2011 by Rockaholic Link to comment Share on other sites More sharing options...
paco Posted July 11, 2011 Share Posted July 11, 2011 (edited) Disregard this, now I see the pic. (Eeermm... did you try uploading a pic?) Edited July 12, 2011 by paco Link to comment Share on other sites More sharing options...
Fossildude19 Posted July 11, 2011 Share Posted July 11, 2011 Crinoid calyx? Regards, Tim - VETERAN SHALE SPLITTER VFOTM --- APRIL - 2015 IPFOTM -- MAY - 2024 _________________________________________________________________________________ "In every walk with nature one receives far more than he seeks." John Muir ~ ~ ~ ~ ><))))( *> About Me Link to comment Share on other sites More sharing options...
FossilDAWG Posted July 11, 2011 Share Posted July 11, 2011 (edited) Yep, a crinoid. Definitely not a carpoid: way too many plates in the calyx, it has an anal tube (that arm-like structure protruding from the top), and it lacks the distinctive carpoid stem. Don Edited July 11, 2011 by FossilDAWG Link to comment Share on other sites More sharing options...
Rockaholic Posted July 11, 2011 Author Share Posted July 11, 2011 Thanks for all your imput.Sorry I'm stubburn but I'm still not convinced that this is a crinoid calyx.I would agree that this fossil lacks the distinct carpoid stem but I have seen drawings of carpoids that have many plates in the calyx.Refer to this website http://museumvictoria.com.au/discoverycentre/infosheets/marine-fossils/echinoderms/ for the drawing I'm refering to. Also I was under the impression that most echinoderms,including crinoids, exhibit symetry in the calyx which this fossil clearly does not. Link to comment Share on other sites More sharing options...
Auspex Posted July 11, 2011 Share Posted July 11, 2011 I see what you're saying, but this one seems to be attached to a very crinoid-like stem "There has been an alarming increase in the number of things I know nothing about." - Ashleigh Ellwood Brilliant “Try to learn something about everything and everything about something.” - Thomas Henry Huxley >Paleontology is an evolving science. >May your wonders never cease! Link to comment Share on other sites More sharing options...
Xiphactinus Posted July 11, 2011 Share Posted July 11, 2011 (edited) Definitely a crinoid calyx. It's somewhat squished, but I circled the areas where some of the arms attached. Edited July 11, 2011 by Xiphactinus Link to comment Share on other sites More sharing options...
Fossildude19 Posted July 11, 2011 Share Posted July 11, 2011 Also, there may have been more symetry to it before it was fossilized as it was - looks kinda flattened/folded over, and not preserved in a nice side view. Are there crinoids found in the area this was found in? Are carpoids? If still in doubt, I'd take it to a museum for an expert to look at. That's probably the easiest way to clear up a disagreement. Just let us know what you find. Regards, Tim - VETERAN SHALE SPLITTER VFOTM --- APRIL - 2015 IPFOTM -- MAY - 2024 _________________________________________________________________________________ "In every walk with nature one receives far more than he seeks." John Muir ~ ~ ~ ~ ><))))( *> About Me Link to comment Share on other sites More sharing options...
Rockaholic Posted July 11, 2011 Author Share Posted July 11, 2011 (edited) Great imput.Thanks again. I'm now 99.9% convienced (like I said I'm stubburn)that this is a crinoid calyx and I think I have a specimen from the same location that has a damaged calyx.Wish I could morph the two and maybe I'd have a more complete specimen.Heres a photo of the crinoid crown.I think it is a Dizygocrinus.Anyone able to identify this fossil? Edited July 11, 2011 by Rockaholic Link to comment Share on other sites More sharing options...
crinus Posted July 11, 2011 Share Posted July 11, 2011 Great imput.Thanks again. I'm now 99.9% convienced (like I said I'm stubburn)that this is a crinoid calyx and I think I have a specimen from the same location that has a damaged calyx.Wish I could morph the two and maybe I'd have a more complete specimen.Heres a photo of the crinoid crown.I think it is a Dizygocrinus.Anyone able to identify this fossil? Dizygocrinus indianensis Picture Link to comment Share on other sites More sharing options...
Rockaholic Posted July 11, 2011 Author Share Posted July 11, 2011 Thanks Crinus Link to comment Share on other sites More sharing options...
Archimedes Posted July 11, 2011 Share Posted July 11, 2011 (edited) does this come from the same site as the brachiopod valve?? if so the crinoid is most likely refered to Batocrinus Edited July 11, 2011 by Archimedes Link to comment Share on other sites More sharing options...
Rockaholic Posted July 12, 2011 Author Share Posted July 12, 2011 Yes this came from the same site as the brachiopod. Link to comment Share on other sites More sharing options...
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