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Thursday May 02, 2024 at 4:09:59 AM (EST)
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Name:
Platycrinites hemisphericus
Age: Mississippian
Formation: Edwardsville Formation
Location: Crawfordsville, Indiana
Size: Crinoid is 12.2" long including stem
This specimen is not for sale
Click here for similar specimens that are for sale
This is an extremely displayable crinoid that we recently obtained from a major collection. It is a large Platycrinites hemisphericus from the Mississippian of Indiana. This type of camerate crinoid has a large cup with multi-branching, biserial arms. This specimen is very 3-dimensional and exhibits exquisite detail. The plate structure of the crinoid is easily seen, and the arms are well-preserved in a somewhat ''splayed'' position. The fine pinnules of the arms are clearly defined, and an extremely long, twisted stem (indicative of the genus) is still tightly attached to the cup. The gracefully-curving, ''corkscrew'' stem is unusually complete and even displays the cirri! The fossil has exceptional color and contrast and is beautifully centered on the somewhat rectangular plate of siltstone. This is a stunning specimen of an aesthetic crinoid with the complete stem wonderfully intact.
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