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†Protacrioceras Sarkar 1955
urn:lsid:organismnames.com:name:1762337
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129
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†Protacrioceras Sarkar 1955
Sarkar 1955. Revision des Ammonites derontees du Cretace inferieur du SE de la France. Memoires de la Societe Geologique de France Paleontologie, 72 1955: 1-176