A BGS Geochronostratigraphy rank
Period

http://data.bgs.ac.uk/id/Geochronology/Rank/PERIOD
In ordered listhttp://data.bgs.ac.uk/ref/Geochronology/RankList
Statushttp://data.bgs.ac.uk/ref/CurrentStatus/CURRENT
Schemahttp://data.bgs.ac.uk/ref/Geochronology/Rank
Label"Period" language=en 
Typehttp://www.w3.org/2004/02/skos/core#Concept
Alternate label"System" language=en 
Definition"A sub-division of a Sub-era." language=en 
Is in schemehttp://data.bgs.ac.uk/ref/Geochronology/Rank
Preferred label"Period" language=en 

namespaces used
bgsrBGS Schemas
bgsrcBGS Current Status Codes
bgsrgBGS Geochronology
bgsrlBGS Lexicon of Named Rock Units
dctDublin Core terms
rdfResource Description Framework
rdfsResource Description Framework - Schema
skosSimple Knowledge Organization System
xsdXML Schema Data Type