PALAEOZOIC (STRATIGRAPHY)
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BTHISTORICAL GEOLOGY + STRATIGRAPHY
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UDC551.73
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Descriptor GERPALÄOZOIKUM (STRATIGRAPHIE)
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Descriptor ENGPALAEOZOIC (STRATIGRAPHY)
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Descriptor FREPALEOZOIQUE (STRATIGRAPHIE)
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Variant GERPALAEOZOIKUM (STRATIGRAPHIE)
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Variant GERPALÄOZOIKUM (STRATIGRAPHIE)
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Variant ENGPALEOZOIC (STRATIGRAPHY)
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NTDEVONIAN (STRATIGRAPHY)
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NTCAMBRIAN (STRATIGRAPHY)
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NTCARBONIFEROUS (STRATIGRAPHY)
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NTORDOVICIAN (STRATIGRAPHY)
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NTPERMIAN (STRATIGRAPHY)
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NTSILURIAN (STRATIGRAPHY)