kerouac22 Posted January 9, 2016 Share Posted January 9, 2016 Hi all, Found this in a creek bed, which I think is Mississippian. Anyway, it appears to be a conglomerate of a bunch of tiny crinoid pieces. Little specks come off of it just when I lift it up. I split it in two to see if it went all the way through, which it does (maybe a dumb idea, I later realized). The only words I can find that come close to describing this are "bioherm" and "coquina," although neither of those really hits it on the head. Anyway, I'm assuming it's a fossil of some kind? Thanks for your help. Link to comment Share on other sites More sharing options...
jpc Posted January 9, 2016 Share Posted January 9, 2016 Its hard to see in the photo, but from your description I would call it a crinoid stem coquina. Link to comment Share on other sites More sharing options...
Auspex Posted January 9, 2016 Share Posted January 9, 2016 Now that's pretty cool right there! It really is an almost solid mass of small columnals. "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...
Pumpkinhead Posted January 9, 2016 Share Posted January 9, 2016 You could definitely get away with calling that a coquina. Most of the time I hear that term used its with mollusk shells, but the official definition can involve pretty much any invertebrate fragments. Link to comment Share on other sites More sharing options...
Auspex Posted January 9, 2016 Share Posted January 9, 2016 By definition: "Coquina (/koʊˈkiːnə/) is a sedimentary rock that is composed either wholly or almost entirely of the transported, abraded, and mechanically-sorted fragments of the shells of molluscs, trilobites, brachiopods, or other invertebrates." "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...
kerouac22 Posted January 9, 2016 Author Share Posted January 9, 2016 Thanks, all! Link to comment Share on other sites More sharing options...
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