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We got a donation at work of a lot of little finds from post oak creek Texas. I’m not familiar with the site at all and the labels for these appear to have gotten wet some time in the past. I looked at the book on Cretaceous sharks and rays of Texas and it made me more and more confused. Would love any help to get these relabeled. If not, they’ll sit for a decade, be thrown out or given away here are my really unsure ideas- 1. Texatrygon sp. or ptychodus sp. 2. Pseudocorax sp. 3. Not enough there ? 4. Not enough there ? 5. Goblin ? 6. Carcharias sp. 7. Carcharias sp. 8. Carcharias sp. 9. Not positive enough to guess 10. Carcharias sp. 11. Hybodus sp. 12. Not enough there ? 13. Ptychodus sp. 14. Too broken ? 15. Ptychodus sp. 16. Too broken ? 17. Fish tooth? 18. Enchodus tooth 19. Drum tooth? Not a vert. The bottom is flat and shiny 20. Small fish tooth 21. Slag? Super shiny in person 22. Stumped here. Bone? Coprolite? Straight shelled cephalopod? Just rocks ?

Wondering if anyone knows what this is? We found several in Post Oak Creek in northern Texas. Thanks!