Rhaetian age
E727670
The Rhaetian age is the final stage of the Late Triassic period, marked by significant marine extinctions and major environmental changes that preceded the Triassic–Jurassic mass extinction.
Statements (40)
| Predicate | Object |
|---|---|
| instanceOf | geologic age ⓘ |
| associatedWith |
changes in carbon isotope records
ⓘ
decline of many Triassic reef ecosystems ⓘ sea-level fluctuations ⓘ |
| belongsToEon | Phanerozoic eon NERFINISHED ⓘ |
| belongsToEra | Mesozoic era NERFINISHED ⓘ |
| boundaryDefinedBy | first appearance of the ammonite Psiloceras spelae tirolicum at the top boundary ⓘ |
| characterizedBy |
major environmental changes
ⓘ
significant marine extinctions ⓘ |
| chronostratigraphicRank | stage ⓘ |
| climate | generally warm greenhouse conditions with regional variability ⓘ |
| contains |
Rhaetian stage marine faunas
ⓘ
late Triassic ammonoid assemblages ⓘ late Triassic conodont assemblages ⓘ late Triassic marine reptiles ⓘ late Triassic terrestrial vertebrates ⓘ |
| endTime | approximately 201.3 million years ago ⓘ |
| follows | Norian age NERFINISHED ⓘ |
| geochronologicRank | age ⓘ |
| linkedTo | early phases of Central Atlantic Magmatic Province activity (proximal in time) ⓘ |
| lithostratigraphicCorrelation | uppermost Triassic marine and continental formations worldwide ⓘ |
| namedAfter | Rhaetian Alps NERFINISHED ⓘ |
| partOf |
Late Triassic epoch
NERFINISHED
ⓘ
Triassic period NERFINISHED ⓘ |
| positionInEpoch | final stage of the Late Triassic epoch ⓘ |
| positionInPeriod | final stage of the Triassic period ⓘ |
| precedes |
Early Jurassic epoch
ⓘ
Hettangian age NERFINISHED ⓘ Triassic–Jurassic mass extinction NERFINISHED ⓘ |
| precedesEvent | Triassic–Jurassic biotic crisis NERFINISHED ⓘ |
| researchField |
paleoceanography
ⓘ
paleoclimatology ⓘ paleontology ⓘ stratigraphy ⓘ |
| startTime | approximately 208.5 million years ago ⓘ |
| timeScale | International Chronostratigraphic Chart NERFINISHED ⓘ |
| topBoundary | Triassic–Jurassic boundary NERFINISHED ⓘ |
| usedIn |
global stratigraphic correlation
ⓘ
paleontological dating of Late Triassic fossils ⓘ reconstruction of Late Triassic paleoenvironments ⓘ |
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.