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. Though