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The Toarcian is, in the ICS' geologic timescale, an age and stage in the Early or Lower Jurassic. It spans the time between 184.2 Ma (million years ago) and 174.7 ±0.8 Ma. It follows the Pliensbachian and is followed by the Aalenian.
Stratigraphic definitions & Overview
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age ammonite jurassic years ago global ics pliensbachian stage lower event fad stratigraphic time gssp aalenian mw-parser-output scale early ma
| Subject | Predicate | Object | Confidence | Src |
|---|---|---|---|---|
| Toarcian | Celestial body | Earth | 1.00 | infobox |
| Toarcian | Chronological unit | Age | 1.00 | infobox |
| Toarcian | Lower boundary definition | Peniche, Portugal | 1.00 | infobox |
| Toarcian | Lower boundary GSSP | FAD of the Ammonite D. (E.) simplex .mw-parser-output .geo-default,.mw-parser-output .geo-dms,.mw-parser-output .geo-dec{display:inline}.mw-parser-output .geo-nondefault,.mw-par… | 1.00 | infobox |
| Toarcian | Lower GSSP ratified | 2014 | 1.00 | infobox |
| Toarcian | Name formality | Formal | 1.00 | infobox |
| Toarcian | Regional usage | Global (ICS) | 1.00 | infobox |
| Toarcian | Stratigraphic unit | Stage | 1.00 | infobox |
| Toarcian | Time scale(s) used | ICS Time Scale | 1.00 | infobox |
| Toarcian | Time span formality | Formal | 1.00 | infobox |
| Toarcian | Upper boundary definition | FAD of the Ammonites Leioceras opalinum and Leioceras lineatum | 1.00 | infobox |
| Toarcian | Upper boundary GSSP | Fuentelsaz, Spain 41°10′15″N 1°50′00″W / 41.1708°N 1.8333°W / 41.1708; -1.8333 | 1.00 | infobox |
| Toarcian | Upper GSSP ratified | 2000 | 1.00 | infobox |
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