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Valvulina schwageri Chapman 1902
urn:lsid:organismnames.com:name:3761065
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Valvulina schwageri Chapman 1902
Chapman 1902. On an Alveolina-Limestone and Nummulitie Limestones from Egypt. Geological Magazine, (4)(ix) 1902: pp. 62-67, 106-114