|
gptkbp:instanceOf
|
geological formation
|
|
gptkbp:beganIn
|
419.2 million years ago
|
|
gptkbp:characterizedBy
|
diversification of fish
first appearance of amphibians
mass extinction at end
first forests
|
|
gptkbp:contains
|
gptkb:Lochkovian_Stage
gptkb:Eifelian_Stage
gptkb:Emsian_Stage
gptkb:Famennian_Stage
gptkb:Frasnian_Stage
gptkb:Givetian_Stage
gptkb:Pragian_Stage
|
|
gptkbp:duration
|
about 60 million years
|
|
gptkbp:endDate
|
358.9 million years ago
|
|
gptkbp:followedBy
|
gptkb:Silurian_System
|
|
https://www.w3.org/2000/01/rdf-schema#label
|
Devonian System
|
|
gptkbp:location
|
gptkb:Devon,_England
|
|
gptkbp:namedAfter
|
gptkb:Devon
|
|
gptkbp:namedFor
|
gptkb:Roderick_Murchison
gptkb:Adam_Sedgwick
|
|
gptkbp:partOf
|
gptkb:Paleozoic_Era
|
|
gptkbp:precededBy
|
gptkb:Carboniferous_System
|
|
gptkbp:recognizedBy
|
gptkb:International_Commission_on_Stratigraphy
|
|
gptkbp:stratotypeSection
|
gptkb:Global_Boundary_Stratotype_Section_and_Point_(GSSP)_at_Klonk,_Czech_Republic
|
|
gptkbp:usedIn
|
geological mapping
chronostratigraphy
|
|
gptkbp:bfsParent
|
gptkb:Silurian_System
gptkb:Illinois_Basin
|
|
gptkbp:bfsLayer
|
6
|