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Name:
Platycrinites saffordi
Age: Mississippian
Formation: Edwardsville Formation
Location: Crawfordsville, Indiana
Size: Crinoid is 2.2 inches long
This specimen is not for sale
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This is a crinoid fossil with a story to tell. It is a large Platycrinites saffordi from the Mississippian of Indiana. This type of camerate crinoid has a cup composed of large, ornamented plates and multi-branching, biserial arms - this 3-dimensional specimen exhibits all of these features in fine fashion. The long, curving, pinnulated arms are beautifully displayed. But that's not all - there is a large gastropod, Platyceras, attached to the crinoid. This gastropod fed off the excrement from the crinoid, and in doing so, kept the environment clean so that the crinoid could keep living. This is a rare example of a true symbiotic relationship in the fossil record. The distinct crinoid is well showcased on the sculpted plate of limestone. This is a extremely uncommon example of an ancient animal relying on another animal for its sustenance.
This fossil was collected and obtained legally, and is also being sold legally.
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