Statements (23)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
geologic period
|
| gptkbp:climate |
warm and humid
|
| gptkbp:correspondsTo |
gptkb:Upper_Carboniferous_(in_Europe)
|
| gptkbp:endDate |
approximately 298 million years ago
|
| gptkbp:followedBy |
gptkb:Permian_Period
|
| https://www.w3.org/2000/01/rdf-schema#label |
Pennsylvanian Period
|
| gptkbp:majorFossils |
giant insects
seed ferns early amniotes scale trees (Lepidodendron) |
| gptkbp:namedAfter |
gptkb:Pennsylvania
|
| gptkbp:notableFor |
high oxygen levels
first appearance of reptiles extensive coal-forming swamps diversification of amphibians large lycopsid trees |
| gptkbp:partOf |
gptkb:Carboniferous_Period
|
| gptkbp:precededBy |
gptkb:Mississippian_Period
|
| gptkbp:significantEvent |
formation of Pangaea began
|
| gptkbp:startDate |
approximately 323 million years ago
|
| gptkbp:usedIn |
North American stratigraphy
|
| gptkbp:bfsParent |
gptkb:Ouachita_orogeny
|
| gptkbp:bfsLayer |
8
|