New Members MrNLovesRocks Posted June 1 New Members Share Posted June 1 Hello everyone! Mr. N here, I teach elementary special education and my students and I found a couple things from the crushed rock from the retaining wall. Item 1: limestone (?) with what I believe is a crinoid calyx exposed partially and scattered crinoid arm segments. Not confident on this one I'm super new to this. (Calyx most visible in last image, what I think are tentacle segments are most visible in the penultimate). Please excuse the green lichen that I haven't cleaned off, I'm afraid of I clean it I will not be able to keep from trying to dig that calyx or whatever out immediately . ________________________________________________________________________________________________________________________ Next is a geode or inclusion of some kind that was buried in fill dirt. We cracked it open together and found crystal formations and varied rock. I am tentatively identifying the brown as some kind of calcite crystal as it is reactive with vinegar and in the general hardness range of calcite. However I don't know how to tell fossil from rock and it's just weird enough I wanted extra eyes. This is also from Crawford county. 3rd and 5th images in this set show what might be a very small fossil tooth or edge of a shell? It's at the 8.5cm mark in image 3 and 5. Link to comment Share on other sites More sharing options...
Fossildude19 Posted June 1 Share Posted June 1 Your first item has a rugose coral, and a bryozoan on it. Your second item looks like some sort of concretion, or septarian nodule, to me. 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...
New Members MrNLovesRocks Posted June 1 Author New Members Share Posted June 1 Well I'm glad I didn't try to dig it out thinking it was a calyx when it's not gonna be that shape at all... For a concretion like that, am I looking at geological processes alone forming the interior as well? Link to comment Share on other sites More sharing options...
Mark Kmiecik Posted June 1 Share Posted June 1 15 hours ago, MrNLovesRocks said: For a concretion like that, am I looking at geological processes alone forming the interior as well? Yes -- some of them are quite beautiful. Many, when cut in half and polished become spectacular specimens. Mark. Fossil hunting is easy -- they don't run away when you shoot at them! Link to comment Share on other sites More sharing options...
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