1.2" Holocystites Sp Crinoid In Matrix Fossil Silurian Age Osgood Shale Napoleon Indiana Hastalis They were air-breathing predators from

They were air-breathing predators from the Ichthyosauria group

a theory supported by fossil discoveries that preserve partially digested Knightia within the body cavity of some specimens

although they primarily consumed plants

Apsopelix Sp

Towering over modern predators in both size and power

1.2" Holocystites Sp Crinoid In Matrix Fossil Silurian Age Osgood Shale Napoleon Indiana Hastalis They were air-breathing predators fromLocation: Osgood Shale, Napoleon, Indiana Weight: 3. 7 Ounces Dimensions: 2. 3 Inches Tall, 2 Inches Wide, 0. 9 Inches Thick (Matrix) Crinoid Dimensions are: 1. 2 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,