CEPHALASPIDOMORPHI (PALAEOZOOLOGY)
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BTAGNATHA (PALAEOZOOLOGY)
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UDC566,12
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Descriptor GERCEPHALASPIDOMORPHI (PALÄOZOOLOGIE)
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Descriptor ENGCEPHALASPIDOMORPHI (PALAEOZOOLOGY)
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Descriptor FRECEPHALASPIDOMORPHI (PALÉOZOOLOGIE)
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NTGALEASPIDA (PALAEOZOOLOGY)
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NTOSTEOSTRACI (PALAEOZOOLOGY)
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NTPETROMYZONTIFORMES/PALAEOZOOLOGY