1.7" Holocystites Sp Crinoid In Matrix Fossil Silurian Age Osgood Shale Napoleon Indiana Tenontosaurus Spanning approximately 20 million years

Spanning approximately 20 million years

and other invertebrates

and intricate patterns

Pygidium (tail): A fused tail section that provided structural support and protection

1.7" Holocystites Sp Crinoid In Matrix Fossil Silurian Age Osgood Shale Napoleon Indiana Tenontosaurus Spanning approximately 20 million yearsLocation: Osgood Shale, Napoleon, Indiana Weight: 8 Ounces Dimensions: 3. 6 Inches Tall, 2 Inches Wide, 1. 5 Inches Thick (Matrix) Crinoid Dimensions are: 1. 7 Inches 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,