TRIGONIOIDA (PALAEOZOOLOGY)
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BTPALAEOHETERODONTA (PALAEOZOOLOGY)
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UDC564,064.1
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Descriptor GERTRIGONIOIDA (PALÄOZOOLOGIE)
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Descriptor ENGTRIGONIOIDA (PALAEOZOOLOGY)
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Descriptor FRETRIGONIOIDA (PALÉOZOOLOGIE)
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NTTRIGONIIDAE (PALAEOZOOLOGY)