Invertebrate Megafauna of the Middle Devonian of Missouri |
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2nd Series Amer anterior aperture Atrypa base beak border Brachial Branson Callaway callawayensis camerae cardinal Cedar Valley Limestone City Cloud collected convex Cooper corallites costae County Cranaena Creek Description Devonian Cedar Valley Devonian Cedar Valley-Missouri differs dorsal east extending Family figs Figure Fossils of North Geol growth lines Hall Hexagonaria lativentra Biofacies Hexagonaria profunda Biofacies Index Fossils interior Invertebrate Iowa Jour lateral living chamber longitudinal margin measures medially Michigan Middle Devonian Cedar miles Mineola Mines Missouri missouriensis Montgomery narrow nearly North America Occurrence ornamentation outline Paleo Paleontology Pedicle pedicle valve Plate portion posterior present Quadrangle R. R. Shrock Remarks Repository rounded septa Shell Shimer side similar slightly species specimen Stainbrook strongly Strophodonta Biofacies surface Swallow synonymy to date tabulae thick thin transverse Type Univ valve ventral wide width zone