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jaw anatomy
suggesting that high juvenile mortality was offset by prolific breeding
Iron contributes warm shades of amber
The largest plates were around 60cm tall and 60cm wide
it's a molecular record that reconstructs the feeding strategies and environmental relationships of creatures lost to time
1.4" Holocystites Sp Crinoid In Matrix Fossil Silurian Age Osgood Shale Napoleon Indiana Geode jaw anatomyLocation: Osgood Shale, Napoleon, Indiana Weight: 9. 1 Ounces Dimensions: 3. 1 Inches Tall, 2. 7 Inches Wide, 1. 6 Inches Thick (Matrix) Crinoid Dimensions are: 1. 4 Inches Tall, 0. 8 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,
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