1.7" Holocystites Sp Crinoid In Matrix Fossil Silurian Age Osgood Shale Napoleon Indiana Tenontosaurus Pterosaurs were a unique group

Pterosaurs were a unique group of flying reptiles that ruled the skies during the Mesozoic Era

Spanning approximately 20 million years

and other invertebrates

designed to grip and cut through substantial prey items

1.7" Holocystites Sp Crinoid In Matrix Fossil Silurian Age Osgood Shale Napoleon Indiana Tenontosaurus Pterosaurs were a unique groupLocation: 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,