Statements (18)
| Predicate | Object | 
|---|---|
| gptkbp:instanceOf | gptkb:geological_formation | 
| gptkbp:beganIn | 11.63 million years ago | 
| gptkbp:definedIn | first appearance of planktonic foraminifera species Globigerinoides subquadratus | 
| gptkbp:duration | 4.384 million years | 
| gptkbp:endDate | 7.246 million years ago | 
| gptkbp:followedBy | gptkb:Serravallian_stage | 
| gptkbp:GSSPYearRatified | 2003 | 
| gptkbp:location | gptkb:Monte_dei_Corvi,_Ancona,_Italy | 
| gptkbp:namedAfter | gptkb:Tortona | 
| gptkbp:partOf | gptkb:Miocene_epoch | 
| gptkbp:precededBy | gptkb:Messinian_stage | 
| gptkbp:relatedTo | gptkb:Upper_Miocene_(regional_stages) | 
| gptkbp:stratigraphicUnitOf | gptkb:theatre age | 
| gptkbp:usedIn | gptkb:International_Commission_on_Stratigraphy_timescale | 
| gptkbp:bfsParent | gptkb:Messinian_Salinity_Crisis | 
| gptkbp:bfsLayer | 8 | 
| https://www.w3.org/2000/01/rdf-schema#label | Tortonian stage |