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Name:
Isorophus cincinnatiensis
Age: Ordovician
Formation: Fairview Formation
Location: Clermont County, Ohio
Size: Matrix plate is approximately 3.5" X 3.8".
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Here is a unique fossil plate. This is a plate of Rafinesquina brachiopods from the Ordovician of Ohio. There are three specimens of Isorophus cincinnatiensis sitting atop two of the brachiopods. These primitive echinoderms were composed of a flexible theca with numerous, polygonal plates. On this specimen, the disc-like edrios display these small plates. Some of the small ambulacra of the edrios are seen. This is a very interesting plate of brachiopods with edrioasteroids attached.
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