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Retrorsirostra Schuchert & Cooper 1931
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Retrorsirostra Schuchert & Cooper 1931
Schuchert & Cooper 1931. Synopsis of the Brachiopod Genera of the Suborders Orthoidea and Pentameroidea, with Notes on the Telotremata. American Journal of Science (5), 22(129) 1931: pp. 241-251