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Name:
Uperocrinus pyriformis
Age: Mississippian
Formation: Upper Burlington
Location: Warren County, Illinois
Size: Crinoid is 3" long including stem
This specimen is not for sale
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Here is an interesting Uperocrinus pyriformis from the Mississippian of Illinois. This type of crinoid has a long, smooth-plated cup and a tegmen composed of numerous, nodose plates. This 3-dimensional crinoid has the stem preserved which is extremely unusual for crinoids from the Burlington Formation. The off-white color of the crinoid contrasts wonderfully with the orangish-brown matrix. It is almost perfectly centered on the rectangular plate of limestone that also contains numerous crinoid fragments. This is a very unique example of Uperocrinus from the Upper Burlington Limestone.
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