Platyceras sp.

Mississippian - Warsaw Formation
Meramecian Series
St. Louis County, Missouri

Click on picures to view specimen AFTER prepared

Platyceras sp.

Platyceras sp.

Collected at the contact between the limestone and soft shale

The Platyceras gastropods lived in a symbiotic association with crinoids.
Platyceras attached and scavenged directly off the crinoid calyx, perhaps
feeding off the ejected material from the anal tube.

I have collected a number of very nice (mostly weathered out of matix)
specimens at this locality and will post those pictures in the near future.

Barry Sutton

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