|
gptkbp:instanceOf
|
geological formation
|
|
gptkbp:climate
|
generally warm
|
|
gptkbp:contains
|
gptkb:Dapingian_Age
gptkb:Darriwilian_Age
gptkb:Hirnantian_Age
gptkb:Sandbian_Age
gptkb:Tremadocian_Age
Floian Age
Katian Age
|
|
gptkbp:continent
|
gptkb:Siberia
gptkb:Baltica
gptkb:Gondwana
gptkb:Laurentia
|
|
gptkbp:duration
|
about 41.6 million years
|
|
gptkbp:endDate
|
443.8 million years ago
|
|
gptkbp:event
|
gptkb:Late_Ordovician_glaciation
gptkb:Ordovician-Silurian_extinction_event
|
|
gptkbp:extinct
|
about 85% of marine species
|
|
gptkbp:firstAppearance
|
jawless fish
moss-like plants
reef-building corals
|
|
gptkbp:followedBy
|
gptkb:Silurian_Period
|
|
gptkbp:fossil
|
rich in marine fossils
|
|
https://www.w3.org/2000/01/rdf-schema#label
|
Ordovician Period
|
|
gptkbp:location
|
gptkb:Wales,_United_Kingdom
|
|
gptkbp:marineLife
|
brachiopods
conodonts
crinoids
graptolites
nautiloids
trilobites
|
|
gptkbp:namedAfter
|
Ordovices (ancient Celtic tribe)
|
|
gptkbp:namedFor
|
gptkb:Charles_Lapworth
|
|
gptkbp:notableFor
|
diversification of marine life
first appearance of coral reefs
first land plants
major extinction event at end
|
|
gptkbp:paleogeography
|
high sea levels
shallow continental seas
|
|
gptkbp:partOf
|
gptkb:Paleozoic_Era
|
|
gptkbp:precededBy
|
gptkb:Cambrian_Period
|
|
gptkbp:publishedIn
|
1879
|
|
gptkbp:recognizedBy
|
gptkb:International_Commission_on_Stratigraphy
|
|
gptkbp:startDate
|
485.4 million years ago
|
|
gptkbp:stratigraphicUnitOf
|
gptkb:Ordovician_System
|
|
gptkbp:bfsParent
|
gptkb:Paleozoic_Era
gptkb:Phanerozoic_Eon
gptkb:Furongian
gptkb:Ordovician-Silurian_extinction_event
|
|
gptkbp:bfsLayer
|
6
|