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The thickness of the Niobrara Formation in Gove County can range from approximately 500 to 700 feet (Roadside Geology of Kansas)
ammonite fossils serve as important index fossils
spending their entire lives in the ocean
Long before modern sharks ruled the seas
3.4" Platycrinites Sp, Platyceras Gastropod Crinoid Fossil Mississippian Age Burlington Iowa Petrified Wood The thickness of the NiobraraLocation: Burlington Formation, Burlington, Iowa Weight: 9. 7 Ounces Dimensions: 3. 4 Inches Long, 2. 7 Inches Wide, 1. 9 Inches Thick (Plate) Mississippian Age, 323 Million Years Old The Item Pictured is the one you will receive. Platycrinites Sp, Platyceras Gastropod Crinoid Crinoids, commonly called sea lilies, are actually animalsnot plants. They belong to the echinoderm family, alongside starfish, sea urchins, and brittle stars. Most Paleozoic
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