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Pliensbachian

Geologic period
The Pliensbachian is an age of the geologic timescale and stage in the stratigraphic column. It is part of the Early or Lower Jurassic Epoch or Series and spans the time between 192.9 ±0.3 Ma and 184.2 ±0.3 Ma. The Pliensbachian is preceded by the... Wikipedia
Occurred: 190.8 (+/- 1) million years ago - 182.7 (+/- 0.7) million years ago
Fossils: IGM 3494
Chronological unit: Age
Lower boundary definition: FAD of the Ammonite species Bifericeras donovani and genus Apoderoceras
Lower boundary GSSP: Robin Hood's Bay, Yorkshire, England, UK; 54°24′25″N 0°29′51″W / 54.4069°N 0.4975°W