@prefix rdf: . @prefix owl: . @prefix skos: . @prefix rdfs: . @prefix api: . @prefix foaf: . rdfs:label "Pridoli Epoch"@en ; skos:broader ; ; . rdfs:label "Telychian Age"@en ; skos:broaderTransitive . rdfs:label "Lochkovian Age"@en ; . rdfs:label "Llandovery Epoch"@en ; skos:broader ; ; . rdfs:label "Ludfordian Age"@en ; skos:broaderTransitive . rdfs:label "Paleozoic Era"@en ; skos:narrower ; . rdfs:label "Phanerozoic Eon"@en ; skos:narrowerTransitive . rdfs:label "Base of Silurian"@en . rdfs:label "Ludlow Epoch"@en ; skos:broader ; ; . rdfs:label "Devonian Period"@en ; . rdfs:label "International Chronostratigraphic Chart (2017)"@en . rdfs:label "Rhuddanian Age"@en ; skos:broaderTransitive . skos:member . rdfs:label "Lower Devonian Epoch"@en ; . rdfs:label "Sheinwoodian Age"@en ; skos:broaderTransitive . rdfs:label "Upper Ordovician Epoch"@en ; . rdfs:label "Wenlock Epoch"@en ; skos:broader ; ; . rdfs:label "Hirnantian Age"@en ; . rdfs:label "Ordovician Period"@en ; . rdfs:label "Base of Devonian"@en . rdfs:label "Homerian Age"@en ; skos:broaderTransitive . rdfs:label "Aeronian Age"@en ; skos:broaderTransitive . a rdfs:Resource , skos:Concept , , , ; rdfs:comment "younger bound -419.2 +|-3.2 Ma"@en , "older bound -443.8 +|-1.5 Ma"@en ; rdfs:label "Silurian Period"@en ; owl:sameAs ; skos:broader ; skos:broaderTransitive ; skos:definition "The Silurian is a geologic period and system that extends from the end of the Ordovician Period, about 443.7 ± 1.5 million years ago (mya), to the beginning of the Devonian Period, about 416.0 ± 2.8 mya. As with other geologic periods, the rock beds that define the period's start and end are well identified, but the exact dates are uncertain by several million years. The Base of the Silurian is set at a major extinction event when 60% of marine eciesSP were wiped out."@en ; skos:inScheme ; skos:narrower , , , ; skos:narrowerTransitive , , , , , , ; skos:notation "a1.1.3.4"^^ ; skos:prefLabel "Силур"@bg , "Silúrcio"@es , "シルル紀"@ja , "Sylur"@pl , "Silúrico"@pt , "Siluur"@nl , "Silūras"@lt , "Silur"@et , "Silur"@no , "Silur"@cs , "Silur"@da , "Silur"@de , "Silurien"@fr , "Siluuri"@fi , "silur"@sv , "silur"@sl , "siluriano"@it , "志留纪"@zh , "szilur"@hu , "silúr"@sk , "Silurian"@en ; ; ; , ; ; ; ; , , ; , , ; ; foaf:primaryTopicOf . rdfs:label "Gorstian Age"@en ; skos:broaderTransitive . skos:member . a api:ItemEndpoint , api:Page ; api:definition ; api:extendedMetadataVersion ; foaf:primaryTopic .