Statements (49)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
geological period
|
| gptkbp:climate |
generally warm and stable
|
| gptkbp:duration |
approximately 23 million years
|
| gptkbp:finish |
419.2 million years ago
|
| gptkbp:follows |
Ordovician System
|
| gptkbp:fossilRecord |
islands
tropical fish subtropical marine environments humid brachiopods trilobites terrestrial environments corals graptolites shallow_seas continental_shelves |
| gptkbp:foundedIn |
443.8 million years ago
|
| gptkbp:geologicalFeatures |
gptkb:Niagara_Formation
gptkb:Salina_Group Ludlow Series Wenlock Series |
| https://www.w3.org/2000/01/rdf-schema#label |
Silurian System
|
| gptkbp:is_characterized_by |
marine life diversification
|
| gptkbp:majorIndustry |
sandstone
limestone shale |
| gptkbp:notable_event |
gptkb:Ordovician-Silurian_extinction_event
Late Silurian extinction event first jawed fish appear first land plants appear |
| gptkbp:notableFeature |
Drepanocladus
Eurypterids Pseudocorax Clymenia |
| gptkbp:notableWork |
study of biodiversity
study of climate change study of early life |
| gptkbp:precededBy |
Devonian System
|
| gptkbp:region |
gptkb:Australia
gptkb:China gptkb:North_America gptkb:Russia gptkb:Scotland gptkb:South_America gptkb:Svalbard Africa Baltic region |