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Boundaries > Base of Ordovician
PREFERRED TERM
Base of Ordovician  
TYPE
  • http://resource.geosciml.org/ontology/timescale/gts#GeochronologicBoundary

  • http://resource.geosciml.org/ontology/timescale/thors#EraBoundary

  • http://www.w3.org/2006/time#Instant

  • rdfs:Resource

BROADER CONCEPT
ENTRY TERMS
  • Base of Lower Ordovician
  • Base of Tremadocian
URI
http://resource.geosciml.org/classifier/ics/ischart/BaseOrdovician
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