A boundary between geological divisions of time
Base Phanerozoic

http://data.bgs.ac.uk/id/Geochronology/Boundary/baseFH
Age determination methodhttp://data.bgs.ac.uk/id/Geochronology/ageDeterminationType/DEFINITE
Age in millions of years before present"542" datatype=xsd:decimal 
Age uncertainty in years"1" datatype=xsd:decimal 
Age"-54200000" datatype=xsd:gYear 
Schemahttp://data.bgs.ac.uk/ref/Geochronology/Boundary
Label"Base Phanerozoic" language=en 
See alsohttp://dbpedia.org/resource/Phanerozoic
Typehttp://data.bgs.ac.uk/ref/Geochronology/Boundary
Is in schemehttp://data.bgs.ac.uk/ref/Geochronology/Boundary
Preferred label"Base Phanerozoic" language=en 

namespaces used
bgsrBGS Schemas
bgsreBGS RCS Earth Material Classes
bgsrgBGS Geochronology
bgsrlBGS Lexicon of Named Rock Units
bgsrmBGS 1:625 000 Digital Geological Map
dctDublin Core terms
foafFriend of a Friend
rdfResource Description Framework
rdfsResource Description Framework - Schema
skosSimple Knowledge Organization System
xsdXML Schema Data Type