Statements (17)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
geological formation
|
| gptkbp:beganIn |
485.4 million years ago
|
| gptkbp:endDate |
477.7 million years ago
|
| gptkbp:followedBy |
gptkb:Furongian
|
| https://www.w3.org/2000/01/rdf-schema#label |
Tremadocian
|
| gptkbp:lowerBoundaryDefinedBy |
first appearance of the conodont Iapetognathus fluctivagus
|
| gptkbp:namedAfter |
Tremadoc
|
| gptkbp:partOf |
gptkb:Ordovician
|
| gptkbp:precededBy |
Floian
|
| gptkbp:rank |
gptkb:book_series
gptkb:theatre |
| gptkbp:upperBoundaryDefinedBy |
first appearance of the graptolite Tetragraptus approximatus
|
| gptkbp:usedIn |
gptkb:International_Chronostratigraphic_Chart
|
| gptkbp:bfsParent |
gptkb:Arenig_period
gptkb:Early_Ordovician gptkb:Stage_10_(Cambrian) |
| gptkbp:bfsLayer |
7
|