http://inspire.ec.europa.eu/codelist/GeochronologicEraValue/hirnantian
2015-08-18 18:00 PM CEST
Hirnantian
Hirnantian
Hirnantian (older bound-445.6 +/-1.5 Ma, younger bound-443.7 +/-1.5 Ma)
Hirnantian (older bound-445.6 +/-1.5 Ma, younger bound-443.7 +/-1.5 Ma)
IUGS /CGI value
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