OPISTHOBRANCHIA (PALAEOZOOLOGY)
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BTGASTROPODA + SNAILS (PALAEOZOOLOGY)
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UDC564,042
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Descriptor GEROPISTHOBRANCHIA (PALÄOZOOLOGIE)
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Descriptor ENGOPISTHOBRANCHIA (PALAEOZOOLOGY)
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Descriptor FREOPISTHOBRANCHIA (PALÉOZOOLOGIE)
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Variant GERHINTERKIEMER (PALÄOZOOLOGIE)
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Variant ENGOPISTHOBRANCHS (PALAEOZOOLOGY)
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NTACTAEONIDAE (PALAEOZOOLOGY)
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NTENTOMOTAENIATA (PALAEOZOOLOGY)
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NTPTEROPODA (PALAEOZOOLOGY)
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NTSTYLOMMATOPHORA (PALAEOZOOLOGY)