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Name:
Forbesiocrinus multibrachiatus and others
Age: Mississippian
Formation: Edwardsville Formation
Location: Crawfordsville, Indiana
Size: Plate is approximately 4.0" X 6.5"
This specimen is not for sale
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This is a very displayable plate of crinoids from the Mississippian of Indiana. At the top of the plate is a large specimen of Platycrinites saffordi. This calyx has good plate structure and shows a portion of the twisted stem. There is a large brown gastropod, Platyceras sp. attached to the cup. 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 an example of a true symbiotic relationship.
To the lower right of this crinoid is a very rare species of Pachylocrinus. This crinoids is very 3-dimensional and preserves fine detail. The long uniserial arms display the branching pattern very nicely. A short section of the stem is still attached. In the center of the plate is one of the most beautiful examples of Forbesiocrinus multibrachiatus we have ever seen. This specimen is EXTREMELY inflated. The plate structure is fantastic and the arms are all intact, curving inward at the top of this flexible crinoid. A long stem is retained by this echinoderm. At the bottom of the plate is an example of Decadocrinus tumidulus. This type of inadunate crinoid has very inflated plates in the small, bowl-shaped cup. The fossils have great color and contrast. They are naturally spaced on the slab in a very beautiful manner. This is an extremely aesthetic plate of crinoids from Indiana.
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