1.5" Holocystites Sp Crinoid In Matrix Fossil Silurian Age Osgood Shale Napoleon Indiana MEa The physiological and ecological adaptability

The physiological and ecological adaptability of crocodilians likely facilitated their survival when dinosaurs

These strata date to the final million years of the Mesozoic Era and include some of the last pterosaur species preceding the K-Pg Extinction

Corythosaurus was a genus of hadrosaurid

Extended cooling periods allowed large mineral crystals to develop

These ancient whales

1.5" Holocystites Sp Crinoid In Matrix Fossil Silurian Age Osgood Shale Napoleon Indiana MEa The physiological and ecological adaptabilityLocation: 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,