St. Louis Formation Phylum Echinodermata (sea urchins - crinoids) Class Echinoidea (sea urchin) Melonechinus multiporus Class Crinoidea (crinoid) Holcocrinus sp. Mississippian Fossils of Missouri
St. Louis Formation
Phylum Echinodermata (sea urchins - crinoids) Class Echinoidea (sea urchin) Melonechinus multiporus Class Crinoidea (crinoid) Holcocrinus sp.
Mississippian Fossils of Missouri