DPS Ammonite Posted January 1, 2018 Posted January 1, 2018 I found this "spiky head" chert fossil in Pennsylvanian Naco Formation Limestone NW of Payson, Arizona near Pine. The "head" is about 1/3 inch across. Is it a crinoid head without arms, what kind? Thanks, John My goal is to leave no stone or fossil unturned. See my Arizona Paleontology Guide link The best single resource for Arizona paleontology anywhere.
Miocene_Mason Posted January 1, 2018 Posted January 1, 2018 Maybe holdfast? Got a similarly shaped (different replacement mineral) thing from the red wall FM I believe to be a crinoid holdfast. Happy hunting, Mason
bone2stone Posted January 1, 2018 Posted January 1, 2018 6 hours ago, WhodamanHD said: Maybe holdfast? Got a similarly shaped (different replacement mineral) thing from the red wall FM I believe to be a crinoid holdfast. Check.
DPS Ammonite Posted January 3, 2018 Author Posted January 3, 2018 Thank you for your help. I might send a photo to a person who researches Naco echinoderms. My goal is to leave no stone or fossil unturned. See my Arizona Paleontology Guide link The best single resource for Arizona paleontology anywhere.
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