Statements (51)
| Predicate | Object |
|---|---|
| gptkbp:instance_of |
gptkb:rock_formations
|
| gptkbp:associated_with |
sea level changes
|
| gptkbp:characterized_by |
marine life diversification
|
| gptkbp:climate |
warm and humid
|
| gptkbp:contains |
Silurian rocks
|
| gptkbp:duration |
approximately 23 million years
|
| gptkbp:ended |
419.2 million years ago
|
| gptkbp:follows |
Ordovician period
|
| gptkbp:fossil_record |
gptkb:Pterygotus
gptkb:Brachiopods gptkb:Hybodus gptkb:Dunkleosteus gptkb:Eurypterids gptkb:Graptolites gptkb:Trilobites Mollusks Corals Fish fossils Cephalaspis Land plant fossils |
| gptkbp:geological_features |
gptkb:limestone
gptkb:sandstone sedimentary rocks shale |
| https://www.w3.org/2000/01/rdf-schema#label |
The Silurian System
|
| gptkbp:includes |
Llandovery epoch
Ludlow epoch Pridoli epoch Wenlock epoch |
| gptkbp:is_divided_into |
Early Silurian
Late Silurian Middle Silurian |
| gptkbp:is_essential_for |
study of evolution
study of paleontology |
| gptkbp:is_significant_for |
development of fish
development of early vascular plants development of jawed vertebrates |
| gptkbp:known_for |
coral reefs
|
| gptkbp:named_after |
Silurian tribe
|
| gptkbp:notable_event |
mass extinction events
|
| gptkbp:notable_for |
first land plants
first terrestrial arthropods |
| gptkbp:precedes |
Devonian period
|
| gptkbp:research_importance |
paleoclimate studies
paleoecology biostratigraphy sedimentology geochronology |
| gptkbp:started_in |
443.8 million years ago
|
| gptkbp:bfsParent |
gptkb:Roderick_Murchison
|
| gptkbp:bfsLayer |
5
|