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DPS Ammonite

Naco Fm. fossil

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DPS Ammonite

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

P1020499 (1280x1127).jpg

P1020501 (1120x863).jpg

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WhodamanHD

Maybe holdfast? Got a similarly shaped (different replacement mineral) thing from the red wall FM I believe to be a crinoid holdfast.

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bone2stone
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.

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DPS Ammonite

Thank you for your help. I might send a photo to a person who researches Naco echinoderms.

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