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gptkbp:instance_of
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gptkb:rock_formations
|
|
gptkbp:characterized_by
|
marine life diversification
|
|
gptkbp:climate
|
generally warm and stable
|
|
gptkbp:duration
|
approximately 24 million years
|
|
gptkbp:first_appearance
|
443 million years ago
|
|
gptkbp:follows
|
Ordovician
|
|
gptkbp:fossil_record
|
gptkb:dinosaurs
gptkb:Triceratops
gptkb:fish
gptkb:Great_Barrier_Reef
crinoids
|
|
gptkbp:geological_formation
|
Salina Group
Niagara Formation
Lockport Formation
|
|
https://www.w3.org/2000/01/rdf-schema#label
|
Silurian System
|
|
gptkbp:last_appearance
|
419 million years ago
|
|
gptkbp:major_rock_types
|
gptkb:limestone
gptkb:sandstone
shale
|
|
gptkbp:notable_event
|
first land plants
first jawed fish
|
|
gptkbp:notable_species
|
gptkb:seafood
gptkb:Pterygotus
gptkb:radio_station
gptkb:fish
gptkb:Conodonts
gptkb:Drepanocladus
gptkb:Foraminifera
gptkb:Strophomena
gptkb:Eurypterids
gptkb:Graptolites
Diatoms
Mollusks
Cephalopods
Microfossils
Bivalves
Corals
Gastropods
Sponges
Sea urchins
Coccolithophores
Bryozoans
Sea lilies
Acanthodian fish
Acritarchs
Cystoids
Orthoceras
|
|
gptkbp:precedes
|
Devonian
|
|
gptkbp:significant_paleontological_site
|
gptkb:Burgess_Shale
Gogo Formation
Herefordshire Lagerstätte
|
|
gptkbp:subdivisions
|
gptkb:Wenlock
gptkb:Ludlow
Llandovery
Pridoli
|
|
gptkbp:bfsParent
|
gptkb:Robert_Murchison
|
|
gptkbp:bfsLayer
|
7
|