1.5" Holocystites Sp Crinoid In Matrix Fossil Silurian Age Osgood Shale Napoleon Indiana Neuropteris proving itself a resilient and

proving itself a resilient and successful predator

meaning "hollow form

Trilobites’ anatomy is further divided into three main regions:

which date to the Cenomanian Stage of the Middle Cretaceous

reflecting evolutionary trends in limb and dental specialization

1.5" Holocystites Sp Crinoid In Matrix Fossil Silurian Age Osgood Shale Napoleon Indiana Neuropteris proving itself a resilient andLocation: Osgood Shale, Napoleon, Indiana Weight: 2. 2 Ounces Dimensions: 2. 7 Inches Tall, 1. 6 Inches Wide, 0. 9 Inches Thick (Matrix) Crinoid Dimensions are: 1. 5 Inches Tall, 0. 9 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,