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†Laddella Spivey 1939
urn:lsid:organismnames.com:name:3115971
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†Laddella Spivey 1939
Spivey 1939. Ostracodes from the Maquoketa Shale, Upper Ordovician, of Iowa. Journal of Paleontology Menasha, 13 1939: pp. 163-175