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I have found this coiled cephlapod in Pennsylvanian age limestone in Missouri. I believe it to either be a temnocheilus or cooperoceras. I was wondering if there is anyway to tell if this fossil was silica. And if it was could it be prepped by using acetic acid. TIA!
Alright I know, I should know better. But the price was right and I was having a good week so I needed something to shatter my hopes and dreams. That out of the way. Listed as a "US acid - prepped specimen" Self explanatory. Back Right foot Tippy Tip of the tail Right ribs My biggest question is the specks of material between the ribs. Is this common on real Keichosaurs? To me on the overall picture they appear to be the ends of the ribs broken off from the underside. I will also note that almost every bone on this little guy is 3D above the rock surface. I was having trouble getting a good side view with my camera, I will try again, but figured you could all start with these! Thanks much as always, -Blake