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Hello, Here are a bunch of old collection fossils that have me stumped...almost no info on provenance so tricky, but I'm hoping I can get at least a fossil identity for them if possible. There are 13 in total, here goes: 1. Crustacean/brachiopod steinkern? 2. Crustacean? Brachiopod? 3. Is this a coral? 4. No clue...thought orthocone but seems too thin? 5. No clue 6. Thought some sort of echinoderm but almost looks six-sided? Reminds me of a construction nut used for screws. 7. Some sort of brachiopod? 8. This seems like a trilobite pygidium, appears to be on a white block of matrix? Any guesses as to specific ID? 9. These seem echinoderm. The one with the protrusion in the center might be an echinoid plate, the rest crinoid plates? 10. I'm guessing these are echinoid spines 11. Looks like some heteromorphic ammonite sections. The one on the right with a double row of tubercles might be Nostoceras or Didymoceras? 12. I'm pretty sure these are Conulariids but does the preservation inform the provenance or ID further? EDIT: one more: 13. Orthocone? Thanks!

I purchased these as Ingenia yanshini which I think became Ajancingenia, which then became and is currently Heyuannia. The formation provided is the Djadochta Formation, but that doesn't seem right since Ingenia/Heyuannia is not found there as far as I've checked. Unfortunately, there isn't provenance other than Mongolia attached to them to say whether they come from the Barun Goyot Formation where Heyuannia yanshini is found. While I'm not necessarily doubting the original ID, I just don't really know. I'm not expecting a positive or diagnostic ID to the genus level, but I wanted to at least know whether or not I can label this to Oviraptoridae indet., possibly Heyuanniinae indet. The original ID is a bit of an odd one, but it might have just been one of the few oviraptorids described at the time. Last I checked, there are now tons of recently described oviraptorid genera in Mongolia and China. The pair of phalanges with supposedly the semilunate carpal attached which I think is the smaller section? I know one of them did have glue in-between them when I lightly smeared it with acetone using a cotton swab. They are associated coming from the same sandstone block, apparently along with other shattered phalanges. Although I don't know if these actually came from the same animal since one looks ever so slightly larger. There is some sort of clump of sand or crystalized piece attached, as well as light beige or cream colored matrix. Not sure if that narrows down a formation, probably not, but I do see a lot of matrix from Mongolia tend to be red-ish color similar to the Kem Kem Beds. Any input is appreciated. There's probably a lesson to be learned here . . .