1" Holocystites Sp Crinoid In Matrix Fossil Silurian Age Osgood Shale Napoleon Indiana Coral thriving for nearly 140 million

thriving for nearly 140 million years

colorful encrusting algae that helped cement the reef together

delicate jellyfish

Early sulfur mining efforts in Louisiana were complicated by loose sediments and quicksand above the deposits

1" Holocystites Sp Crinoid In Matrix Fossil Silurian Age Osgood Shale Napoleon Indiana Coral thriving for nearly 140 millionLocation: Osgood Shale, Napoleon, Indiana Weight: 1 Pound 3. 4 Ounces Dimensions: 3. 4 Inches Tall, 3 Inches Wide, 1. 8 Inches Thick (Matrix) Crinoid Dimensions are: 1 Inch Tall, 0. 7 Inches Wide The Item Pictured is the one you will receive. Holocystites Sp Silurian in age (420 million years old) Holocystites is an extinct genus of echinoderms belonging to the class Cystoidea and sub phylum Blastozoa. These organisms thrived during the Paleozoic Era,