Statements (17)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
geological formation
|
| gptkbp:beganIn |
485.4 million years ago
|
| gptkbp:earliestStageOf |
gptkb:Ordovician_Period
|
| gptkbp:endDate |
477.7 million years ago
|
| gptkbp:followedBy |
Furongian Stage
|
| gptkbp:GSSPYearRatified |
2000
|
| https://www.w3.org/2000/01/rdf-schema#label |
Tremadocian Stage
|
| gptkbp:location |
Greenpoint section, Newfoundland, Canada
|
| gptkbp:lowerBoundaryDefinedBy |
first appearance of the conodont Iapetognathus fluctivagus
|
| gptkbp:namedAfter |
gptkb:Tremadoc,_Wales
|
| gptkbp:partOf |
gptkb:Ordovician_Period
|
| gptkbp:precededBy |
gptkb:Floian_Stage
|
| gptkbp:stratigraphicUnitOf |
Lower Ordovician Series
|
| gptkbp:upperBoundaryDefinedBy |
first appearance of the graptolite Tetragraptus approximatus
|
| gptkbp:usedIn |
gptkb:International_Chronostratigraphic_Chart
|
| gptkbp:bfsParent |
gptkb:Ordovician_System
|
| gptkbp:bfsLayer |
7
|