Arborispongia delicatulaPhylum Porrifera Aviculopecten spPhylum Mollusca, Class Bivalviaa Geological Time: Mississippian Size (25.4mm=1 inch): Sponge fossil: 80 mm, Bivalve fossil 25 mm by 20 mm across, Matrix: 75 mm by 140 mm Fossil Site: Heath Shale Formation, Bear Gulch Limestone, Fergus County, Montana Code: BGF487 Price: Sold |
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