Hirnantian Age

URI: https://gptkb.org/entity/Hirnantian_Age
GPTKB entity
Statements (14)
Predicate Object
gptkbp:instanceOf gptkb:geological_formation
gptkbp:endDate 443.8 million years ago
gptkbp:followedBy Katian Age
gptkbp:namedAfter gptkb:Hirnant,_Wales
gptkbp:partOf gptkb:Ordovician_Period
gptkbp:precededBy gptkb:Rhuddanian_Age
gptkbp:significantEvent gptkb:Late_Ordovician_mass_extinction
gptkb:Hirnantian_glaciation
gptkbp:startDate 445.2 million years ago
gptkbp:stratigraphicUnitOf gptkb:theatre
gptkbp:usedIn gptkb:International_Chronostratigraphic_Chart
gptkbp:bfsParent gptkb:Ordovician_Period
gptkbp:bfsLayer 7
https://www.w3.org/2000/01/rdf-schema#label Hirnantian Age