Permian
http://inspire.ec.europa.eu/codelist/GeochronologicEraValue/permian
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Lopingian
Lopingian (older bound-260.4 +/-0.7 Ma, younger bound-251 +/-0.4 Ma)
IUGS /CGI value
CodeListValue
Guadalupian
Guadalupian (older bound-270.6 +/-0.7 Ma, younger bound-260.4 +/-0.7 Ma)
IUGS /CGI value
CodeListValue
Cisuralian
Cisuralian (older bound-299 +/-0.8 Ma, younger bound-270.6 +/-0.7 Ma)
IUGS /CGI value
CodeListValue
CodeListValue