Statements (14)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
gptkb:geological_formation
|
| gptkbp:beganIn |
443.8 million years ago
|
| gptkbp:definedIn |
first appearance of graptolite Akidograptus ascensus
|
| gptkbp:endDate |
440.8 million years ago
|
| gptkbp:followedBy |
gptkb:Hirnantian_Age
|
| gptkbp:namedAfter |
gptkb:Rhuddlan
|
| gptkbp:partOf |
gptkb:Silurian_Period
gptkb:Llandovery_Epoch |
| gptkbp:precededBy |
gptkb:Aeronian_Age
|
| gptkbp:usedIn |
gptkb:International_Chronostratigraphic_Chart
|
| gptkbp:bfsParent |
gptkb:Hirnantian_Age
gptkb:Llandovery_Epoch |
| gptkbp:bfsLayer |
8
|
| https://www.w3.org/2000/01/rdf-schema#label |
Rhuddanian Age
|