Gilbertsocrinus tuberosusPhylum Echinodermata, Class Camerata, Diplobathida, Rhodocrinitidae Geological Time: Lower Mississippian Osagean Stage (345 m.y.a) Size: Crinoid crown: 40 mm long by 35 mm tall Stem: 30 mm on a 52 mm by 22 mm sculpted matrix Fossil Site: Crawfordsville, Indiana Crinoids |
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