Statements (19)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
geological formation
|
| gptkbp:characterizedBy |
diversification of marine life
appearance of first coral reefs appearance of first true cephalopods expansion of trilobites first evidence of land plants rise in sea level |
| gptkbp:contains |
gptkb:Tremadocian
Floian |
| gptkbp:endDate |
470 million years ago
|
| gptkbp:followedBy |
gptkb:Middle_Ordovician
|
| https://www.w3.org/2000/01/rdf-schema#label |
Early Ordovician
|
| gptkbp:partOf |
gptkb:Ordovician
|
| gptkbp:precededBy |
gptkb:Late_Cambrian
|
| gptkbp:startDate |
485.4 million years ago
|
| gptkbp:bfsParent |
gptkb:Phacopida
gptkb:rugose_corals gptkb:Ordovician |
| gptkbp:bfsLayer |
6
|