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†Placentula Jones & Holl 1886
urn:lsid:organismnames.com:name:3981918
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†Placentula Jones & Holl 1886
Jones & Holl 1886. Notes on the Palaezoic Bivalved Entomostraca. xxi. On some Silurian Genera and Species. Annals of Natural History, (5)(xvii) 1886: pp. 403-414