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Super folks and fossils! I had a decent trip to Penn Dixie with the experts recently and thought I would share a few finds. The first is the lower third of a crinoid calyx. I measures 4 cm and has an intact stem attachment segment. Aside from stems, its the first decent crinoid part I have found since 2015. I am fascinated by the geometry of the echinoderm organization- 6 around the stem, them 12 around the next whirl, makes we wish I had the entire calyx.

I’ve had great success in finding multiple Crinoid calyx in a stream in St Louis county, Missouri. The quartz drusy in the geodes are beautiful. Never cut a Crinoid open - many of them already have a “viewing hole” to see the amazing sparkle inside!

Found in some landscaping gravel I’ve found boatloads of crinoid stems at. Brachiopods and gastropods are not too uncommon in those rocks. Paleozoic, likely Ordovician-Silurian.

Hello group thank you for your help yesterday with my trilobite. I'm still working on my database and found these two items. I know a precise ID is not easy across here but could you give me some though ideas about possible era and the mammal Jaw animal and if possible what crinoid the Calyx is Thank you

Well I have been off of work this past week, and I start back this following Monday. With some of my extra time I've had, I've started work on prepping/ repairing some of my bulk Burlington crinoids that have just been sitting around. All of these calyxs are in different stages of completion, due to me always hoping from one to the other. Starting with one of my favorite species, Azygocrinus rotundus. This piece is mostly completed, I just need to finish working the matrix to however I'd like it. Next we have a mostly complete Uperocrinus pyriformis. When working this out of the tall wall of limestone it came out clean, but in two pieces. Repaired I then flipped it and prepped from the other side. I estimated I'm 70% finished with this one, as I'll do minimal work to the the matrix itself. Will look great when done and sit upright like the second picture below shows. I'll update the thread when finished. Second Uperocrinus Next is Macrocrinus verneuilianus. Found this one earlier on this week when I went to do recon in a pretty random abandoned field. I'm taking my time with this one, and have only put about 35 minutes of scribe work in so far. Believe it or not I wasn't even sure if this was a calyx when I brought it home, as the calyx had one arm hole exposed from the limestone with the rest buried when found. Here is another that needs repair before any prep. On the journey home, this piece fell apart in my backpack. A total shame as there is a Teleiocrinus umbrosus (only my 2nd ever found) with a Macrocrinus verneuilianus right below it. The piece fell apart clean and will hopefully look good one day. This will be a nightmare (see crack running through middle of calyx?) to finish. And I know this isn't a crinoid but I found it earlier this week along with the Macrocrinus shown earlier when I was scouting a new overgrown field, and felt it was worth sharing too. In the chert layer I ended up finding and working out a really nice terebratulid brach with its inner support loop. Took 4 precise splits, all at different angles to reveal all its inner glory. Nerve racking to say the least. It's hard to see the features of the loop due to the heavy coat of druzy. Heres a very useful reference and pic for those of you who don't understand what it is you are looking at. It's pretty rare the innards preserved within the brachiopod in this "geodic" way. http://palaeos.com/metazoa/brachiopoda/brachiopoda.html Update to first macrocrinus

For those of you familiar with crinoids of the Burlington Formation, (Mississippian) I would like to get a second opinion. This calyx is partial, but I believe there is enough present to confirm my guess for ID as Agaricocrinus planoconvexus? I haven't collected even a partial of this species yet, so confirmation would be exciting. Thanks for your thoughts, Jackson Top Bottom Side shots This other one is probably complete. If it takes me prepping this one to get a 100% confirmation, please let me know and I will do so. (Would rather keep it to prep later)

While I was out today I found a nice crinoid in a big chunk of crinoidal limestone. I decided to take one risky wack to the opposing side of the calyx with my Estwing at the rock, which ended up working out well. Most of the time I wouldn't bother because it never goes this smoothly, but I have a lot of this species so I didn't mind if I busted it. The circular calyx is very reminiscent of Azygocrinus. After splitting the rock, I took the half home with the crinoid. The rest of the work was done with airscribe. I'd say it came out pretty well. Once I had the size of the piece down, I worked around to keep the piece and calyx intact so it could be removed/replaced back in its calcitic rocky home.

I would love your opinions on these Lake Michigan, IL beach finds. Am I correct in thinking that these are crinoid calyces? As always, thanks so much for your input. A Hash rock with a terribly worn crinoid but with the outline of its calyx visible? The cup shaped (bottom part only?) of a crinoid calyx? Upside down view. Ca. 1cm wide View of the bottom Top view: Plate from the IL Geological Survey: Or something like this silurian crinoid "Sagneocrinites Expansus":

I stopped at several road cuts on both sides of the TN River in Decatur and Wayne Counties Monday (Nov. 4, 2019). Two more damaged Rhizophyllums without the lids, some really nice geodized Crinoid and Cystoid Calyx along with several geodized stem segments and a geodized horn coral. Cephalopod sections in situ, other Calyx pieces, etc. I'll try to get better pictures soon!! Thanks For Looking and Keep On Rocking, Roger

A friend of mine found these fossil impressions while digging the foundation of his house near Huntsville, AL. This is Mississippian, Bangor Limestone Formation. In trying to identify the species, he thought it might be megistocrinus sp. He would like a definitive ID, if possible, so I appreciate all help. Thank you, Leah

Made it to the South Pit of Hungry Hollow today for 3 hours and found a few interesting bits. The most interesting was the crinoid calyx. It's amazing what a little rain will uncover.

Need help - what is this? I mostly find horn coral and button corals at the south pit in Hungry Hollow, Ontario but this one is unique. Can someone tell me what it is? It is 7/8" long...

I found a real treat, I think. I believe this is a crinoid calyx. It's very light weight, hollow, with maybe a few calcium crystals within. Would u call this matrix mineralized?