|
gptkbp:instanceOf
|
geological formation
|
|
gptkbp:characterizedBy
|
high sea levels
diverse marine life
glaciation events
|
|
gptkbp:climate
|
global cooling
|
|
gptkbp:continent
|
Gondwana moved over the South Pole
|
|
gptkbp:duration
|
about 15 million years
|
|
gptkbp:endDate
|
approximately 443 million years ago
|
|
gptkbp:followedBy
|
gptkb:Silurian_period
|
|
https://www.w3.org/2000/01/rdf-schema#label
|
Late Ordovician period
|
|
gptkbp:majorExtinction
|
second largest extinction event in Earth's history
|
|
gptkbp:marineFauna
|
brachiopods
conodonts
graptolites
nautiloids
trilobites
|
|
gptkbp:notableEvent
|
gptkb:Late_Ordovician_mass_extinction
|
|
gptkbp:notableSite
|
gptkb:Anticosti_Island
Cincinnati region
|
|
gptkbp:partOf
|
gptkb:Ordovician_period
|
|
gptkbp:precededBy
|
Middle Ordovician period
|
|
gptkbp:seaLevelChange
|
major regression at end of period
|
|
gptkbp:stageName
|
gptkb:Hirnantian
gptkb:Katian
gptkb:Sandbian
|
|
gptkbp:startDate
|
approximately 458 million years ago
|
|
gptkbp:bfsParent
|
gptkb:Late_Ordovician_glaciation
gptkb:Ordovician–Silurian_extinction_event
|
|
gptkbp:bfsLayer
|
8
|