upperBoundaryDefinition
7
triples
GPTKB property
Random triples
| Subject | Object |
|---|---|
| gptkb:Maastrichtian_stage | first appearance of the foraminiferan species Globigerina eugubina |
| gptkb:Zanclean_Stage | base of the Gauss Chron (C2An) |
| gptkb:Greenlandian | gptkb:8.2_kiloyear_event |
| gptkb:Gelasian_Age | base of the Brunhes–Matuyama magnetic reversal |
| gptkb:Northgrippian_Age | 4.2 kiloyear event |
| gptkb:Cambrian_Stage_2 | not formally defined |
| gptkb:Lochkovian_Stage | First appearance of conodont Eognathodus sulcatus |