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Mississippian Sea Floor Age: Mississippian Formation: Edwardsville Formation Location: Crawfordsville, Indiana Size: Largest crinoid is 3 inches long This specimen is not for sale Click here for similar specimens that are for sale
This is an extremely unusual trilobite fossil. It is a pair of Hesslerides bufo preserved on the same plate with three different crinoids. As everyone knows, Mississippian trilobites are very rare and highly collectible. And two Mississippian trilobites on the same plate is almost unheard of! And three different crinoids on that same plate is...well, WOW! The crinoids from left to right are Barycrinus rhombiferus, Scytalocrinus decadactylus, and Parisocrinus crawfordsvillensis. All three crinoids have good form and some stem attached, which is unusual. This is an extremely collectible example of both trilobites and crinoids preserved together on the Mississippian sea floor.