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As an avid fossil collector growing up in Cincinnati, I found that even partially complete echinoderm fossils were as rare as hen's teeth. I did eventually find one edrioasteroid on a rafinesquina shell but it was poorly preserved. I have however found some nice Ordovician echinoderm fossils from Morocco. I will kow tow to you if you happen to find one in the Cincinnatian. Attached are three Moroccan Ordovician echinoderms. Note that the labels are in 12 point font.

I found this a few years ago, 2021 or so. Anybody know if this is an brittle star or something else? The supposed brittle star is attached to a brachiopod. Location found is Suedberg, Schuylkill County, Pennsylvania. Hamilton Group, probably Mahantango Formation. In this image you can see on the lower left side of the brachiopod a hole made by boring- may or may not be the work of the potential brittle star. In the above image as well you can make out where some of the arms are, though the image is bad quality. In the next image it is somewhat easier to see the individual arms- I had much better lighting. I can take more pictures if requested.

Found this on a Dutch beach (Zandmotor) 6 months ago. Max. diameter appr. 14 mm. Shape looks somewhat like a pentagon. Two sides have openings in them (marked a and b in pictures), within each opening there there seems to be a bit dividing both openings in two halves. Ar least one of the corners of the pentagon seems to have had a protrusion (stalk, arm?) that has broken off. Encircled in the pictures. Due to the shape, the openings, and the broken off bit this looks like like some echinoderm fossil to me. But which one? Any ideas?

Two quick items this morning from the Ozan Formation (Cretaceous, Campanian) of north Texas (Fannin County). These items are small, picked from the matrix. The first one is 5mm long and I'm wondering if it could be a partial leg of an ophiuroid. It looks similar to one I saw in a publication from the North Carolina Fossil Club. It has numerous partially overlapping segments but unfortunately the bottom? is not preserved. I'm wondering if @EPIKLULSXDDDDD can look at his recent brittle star find and see if there is any similarity, I can't tell from the pictures posted here; http://www.thefossilforum.com/index.php?/topic/129481-some-say-lightning-doesnt-strike-the-same-place-twice/&tab=comments#comment-1400875 I am plenty open to other ideas on what it might be as well and I realize it may be too fragmentary to say anything for sure. Here are a couple of pictures: The second one I believe is a "worm tube", some sort of serpulid, but I'm not sure as it is more "spikey" than I have seen before and looks a bit more segmented. It also starts out in a bit or a curl like I have seen with certain gastropods and even an ammonite, but that may just be coincidental. The black bar at the bottom is 1cm long so this item is about 4-5 mm ish. Thanks for looking and I appreciate any opinions. Mike

Meadow of dancing brittle stars shows evolution at work University of Cambridge, August 14, 2017 https://www.sciencedaily.com/releases/2017/08/170814093417.htm Australian Scientists Just Found A 'Perfectly Preserved' 275 Million Year Old Starfish Fossil, Rae Johnston, Gizmodo https://www.gizmodo.com.au/2017/08/australian-scientists-just-found-a-perfectly-preserved-275-million-year-old-starfish-fossil/ Starfish the size of dinner plates discovered at Gascoyne Junction, Curtin Uni, West Australian, August 13, 2017 https://thewest.com.au/news/wildlife/starfish-the-size-of-dinner-plates-discovered-at-gascoyne-junction-by-uwa-curtin-uni-researchers-ng-b88567204z The paper is: Aaron W. Hunter and Kenneth J. McNamara. 2017. Prolonged co-existence of “Archaic” and “Modern” Palaeozoic ophiuroids – evidence from the early Permian, Southern Carnarvon Basin, Western Australia. Journal of Systematic Palaeontology. http://www.tandfonline.com/doi/abs/10.1080/14772019.2017.1353549 Yours, Paul