javajunkie Posted June 16, 2016 Share Posted June 16, 2016 This is one of the smaller rocks too! Very interesting find on my Father's land. Link to comment Share on other sites More sharing options...
Fossildude19 Posted June 16, 2016 Share Posted June 16, 2016 That is a nice chunk of crinoidal limestone. Regards, Tim - VETERAN SHALE SPLITTER VFOTM --- APRIL - 2015 __________________________________________________ "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...
doushantuo Posted June 16, 2016 Share Posted June 16, 2016 (edited) You can say that again,Tim. JJ,crinoids are echinoderms with a stalk edit:some LARGE ossicles in there! and not always sessile(attached to the substrate with a holdfast) http://palaeo-electronica.org/2007_1/crinoid/crinoid.pdf Edited June 16, 2016 by doushantuo 2 Link to comment Share on other sites More sharing options...
FossilDudeCO Posted June 16, 2016 Share Posted June 16, 2016 Holy Crinoids Batman! Link to comment Share on other sites More sharing options...
Guguita2104 Posted June 16, 2016 Share Posted June 16, 2016 (edited) You can say that again,Tim. JJ,crinoids are echinoderms with a stalk edit:some LARGE ossicles in there! and not always sessile(attached to the substrate with a holdfast) http://palaeo-electronica.org/2007_1/crinoid/crinoid.pdf Yes, the majority of the crinoids are not sessile in their adult forms.Recent studies show that they are free-swimming animals.There are also many crinoids that were able to swim, like the well-known Saccocoma , Uintacrinus, etc.. Edited June 16, 2016 by Guguita2104 1 Link to comment Share on other sites More sharing options...
Guguita2104 Posted June 17, 2016 Share Posted June 17, 2016 The stems present in your "crinoidal limestone" were part of their stalk (specifically of the column).However, there are unstalked crinoids whose comun denomination is feather stars (they're also known as comatulids). Regards, Here it's a site that explains it very well, IMO:http://www.kgs.ku.edu/Extension/fossils/crinoid.html 1 Link to comment Share on other sites More sharing options...
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