1.6" Holocystites Sp Crinoid In Matrix Fossil Silurian Age Osgood Shale Napoleon Indiana Cerussite A notable variety of andalucite

A notable variety of andalucite is chiastolite

Chemical analysis shows it is roughly 93% iron

Its most striking feature was the enormous armored dome covering its back

and Late Cretaceous ecosystems

1.6" Holocystites Sp Crinoid In Matrix Fossil Silurian Age Osgood Shale Napoleon Indiana Cerussite A notable variety of andaluciteLocation: Osgood Shale, Napoleon, Indiana Weight: 3. 5 Ounces Dimensions: 2. 7 Inches Tall, 1. 5 Inches Wide, 1. 2 Inches Thick (Matrix) Crinoid Dimensions are: 1. 6 Inches Tall, 0. 8 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,