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†Produvalia (Pachyduvalia) Riegraf 1981
urn:lsid:organismnames.com:name:228691
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106
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†Produvalia (Pachyduvalia) Riegraf 1981
Riegraf 1981. Revision der Belemniten des Schwabischen Jura. Teil 8 (Schluss). Palaeontographica Abteilung A Palaeozoologie-Stratigraphie, 173(1-4) 1981: 64-139