1.6" Holocystites Sp Crinoid In Matrix Fossil Silurian Age Osgood Shale Napoleon Indiana Cerussite and Late Cretaceous ecosystems

and Late Cretaceous ecosystems

trilobites diversified into thousands of species

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

you might think nature combined a turtle

allowing movement and defensive behaviors such as curling

1.6" Holocystites Sp Crinoid In Matrix Fossil Silurian Age Osgood Shale Napoleon Indiana Cerussite and Late Cretaceous ecosystemsLocation: 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,