ACANTHOCERATIDAE (PALAEOZOOLOGY)
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BTAMMONITIDA (PALAEOZOOLOGY)
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UDC564,075.6*ACAN
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Descriptor GERACANTHOCERATIDAE (PALÄOZOOLOGIE)
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Descriptor ENGACANTHOCERATIDAE (PALAEOZOOLOGY)
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Descriptor FREACANTHOCERATIDAE (PALÉOZOOLOGIE)