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The Stringocephalus is also so abundant in the Middle Devonian of the banks of the Rhine as to have suggested the name of Stringocephalus Limestone. Megalodon cucullatus, Sowerby. Eifel; also Bradley, S. Devon. a. The valves united. b. Conularia ornata, D'Arch. and De Vern. Ser. volume 6. Bronteus flabellifer, Goldf. Mid.
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