1.2" Holocystites Sp Crinoid In Matrix Fossil Silurian Age Osgood Shale Napoleon Indiana Hastalis Gorgosaurus played a crucial role

Gorgosaurus played a crucial role in shaping Late Cretaceous food webs

size alone did not guarantee absolute dominance

Fossil Metasequoia provides a rare glimpse into prehistoric forests

analogous to modern sawfish behavior

although they primarily consumed plants

1.2" Holocystites Sp Crinoid In Matrix Fossil Silurian Age Osgood Shale Napoleon Indiana Hastalis Gorgosaurus played a crucial roleLocation: 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,