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.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Rhaetian age canonical | 2 |
How this entity was disambiguated
This entity first appeared as the object of triple T8356670 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Rhaetian age Context triple: [Late Triassic, endBoundary, Rhaetian age]
-
A.
Hyborian Age
The Hyborian Age is a fictional prehistoric era created by Robert E. Howard as the sword-and-sorcery setting for his Conan the Barbarian stories.
-
B.
Calymmian Period
The Calymmian Period is the earliest division of the Mesoproterozoic Era, marked by the stabilization and expansion of continental crust and the development of large sedimentary basins roughly 1.6 to 1.4 billion years ago.
-
C.
Hallstatt culture
The Hallstatt culture was an early Iron Age Central European archaeological culture (c. 800–450 BCE) widely regarded as the formative phase of Celtic civilization.
-
D.
Iron Age II
Iron Age II was a period in the ancient Near East, roughly spanning the first millennium BCE, marked by the rise of complex states, widespread use of iron tools and weapons, and the flourishing of kingdoms such as Israel and Judah.
-
E.
Idumaean
Idumaean refers to a person from Idumea (Edom), a region south of Judea whose inhabitants were integrated into the Jewish state in the late Second Temple period and are historically associated with figures like Herod the Great.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Rhaetian age Target entity description: 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.
-
A.
Hyborian Age
The Hyborian Age is a fictional prehistoric era created by Robert E. Howard as the sword-and-sorcery setting for his Conan the Barbarian stories.
-
B.
Calymmian Period
The Calymmian Period is the earliest division of the Mesoproterozoic Era, marked by the stabilization and expansion of continental crust and the development of large sedimentary basins roughly 1.6 to 1.4 billion years ago.
-
C.
Hallstatt culture
The Hallstatt culture was an early Iron Age Central European archaeological culture (c. 800–450 BCE) widely regarded as the formative phase of Celtic civilization.
-
D.
Iron Age II
Iron Age II was a period in the ancient Near East, roughly spanning the first millennium BCE, marked by the rise of complex states, widespread use of iron tools and weapons, and the flourishing of kingdoms such as Israel and Judah.
-
E.
Idumaean
Idumaean refers to a person from Idumea (Edom), a region south of Judea whose inhabitants were integrated into the Jewish state in the late Second Temple period and are historically associated with figures like Herod the Great.
- F. None of above. chosen
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 ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: Rhaetian age Description of subject: 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.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.