PRIONOCERATIDAE (PALAEOZOOLOGY)
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BTGONIATITIDA (PALAEOZOOLOGY)
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UDC564,075.2*PRIO
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Descriptor GERPRIONOCERATIDAE (PALÄOZOOLOGIE)
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Descriptor ENGPRIONOCERATIDAE (PALAEOZOOLOGY)
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Descriptor FREPRIONOCERATIDAE (PALÉOZOOLOGIE)