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Saturday April 20, 2024 at 1:05:45 AM (EST)
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| Multiple Crinoid Specimen From The Burlington Limestone |
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MISSOURI
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| Stock Number CCUSM30 |
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Name:
Uperocrinus aequibrachiatus, Aorocrinus parvus, & Physetocrinus ventricosus
Age: Mississippian
Formation: Upper Burlington Formation
Location: Ralls County, Missouri
Size: Matrix plate is 3.5" X 3.5".
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Here is an interesting plate of crinoids from the Upper Burlington Formation of Missouri. The crinoid on the left is Uperocrinus aequibrachiatus. The smaller crinoid to the right is Aorocrinus parvus. Both of these crinoids exhibit the arm attachment points. The large crinoid at the bottom right is Physetocrinus ventricosus. All three crinoids display good plate structure. There is a long articulated crinoid stem and other crinoid pieces on the slab. The fossils have good off-white color and great contrast with the brownish-orange matrix. The crinoids are very 3-dimensional. This is a nice slab of crinoids with three different genera.
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