St. Louis, Missouri
The crown is approximately 1 1/2 inches.
I would appreciate help with identification and references.
Onychocrinus is a flexible crinoid with a very diminutive cup and nothing like the
one in the picture. The pictured one is probably a Zeacrinites or an Alcimocrinus.
Harrell Strimple described something like this from either Oklahoma or Arkansas
in the 70's.
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