Late Triassic

E196698

epoch geologic period

The Late Triassic was a geologic period and epoch, roughly 237–201 million years ago, marked by the diversification of early dinosaurs and the end-Triassic mass extinction that paved the way for Jurassic ecosystems.

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All labels observed (2)

Label	Occurrences
Late Triassic canonical	6
Late Triassic Epoch	1

Statements (49)

Predicate	Object
instanceOf	epoch ⓘ geologic period ⓘ
chronostratigraphicUnit	Upper Triassic Series ⓘ
climate	generally warm ⓘ seasonally arid in many regions ⓘ
contains	Carnian ⓘ Norian ⓘ Rhaetian ⓘ
dominantTerrestrialVertebrates	early dinosaurs ⓘ non-dinosaurian archosaurs ⓘ therapsids in some regions ⓘ
endBoundary	Rhaetian age ⓘ
endTime	approximately 201 million years ago ⓘ
flora	conifers ⓘ ginkgophytes ⓘ seed ferns ⓘ
followedBy	Hettangian stage ⓘ surface form: Hettangian
follows	Middle Triassic ⓘ
geochronologicUnit	Late Triassic self-linksurface differs ⓘ surface form: Late Triassic Epoch
majorEvent	diversification of early dinosaurs ⓘ diversification of marine reptiles ⓘ end-Triassic mass extinction ⓘ evolution of first true crocodile-line archosaurs ⓘ origin and diversification of pterosaurs ⓘ radiation of early mammals ⓘ
marineLife	ammonoids ⓘ bivalves ⓘ conodonts ⓘ ichthyosaurs ⓘ plesiosaurs (late in the interval) ⓘ
massExtinction	end-Triassic extinction event ⓘ
massExtinctionConsequence	ecological expansion of dinosaurs in the Jurassic ⓘ
massExtinctionImpact	decline of many archosaur groups ⓘ severe losses in marine faunas ⓘ
massExtinctionSeverity	one of the five largest Phanerozoic mass extinctions ⓘ
massExtinctionTiming	at or near the Triassic–Jurassic boundary ⓘ
ocean	Panthalassa Ocean dominant ⓘ Tethys Ocean ⓘ surface form: Tethys Ocean extensive in low latitudes
paleogeography	supercontinent Pangaea largely intact ⓘ
partOf	Mesozoic Era ⓘ Triassic ⓘ
precededBy	Anisian ⓘ Ladinian ⓘ
precedes	Early Jurassic ⓘ
startBoundary	Carnian age ⓘ
startTime	approximately 237 million years ago ⓘ
stratigraphicBoundaryDefinition	Global Boundary Stratotype Section and Point ⓘ surface form: Global Boundary Stratotype Section and Point (GSSP) used for stage limits
timeScale	Mesozoic Era ⓘ
usedIn	International Chronostratigraphic Chart ⓘ

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: Late Triassic
Description of subject: The Late Triassic was a geologic period and epoch, roughly 237–201 million years ago, marked by the diversification of early dinosaurs and the end-Triassic mass extinction that paved the way for Jurassic ecosystems.

Referenced by (7)

Full triples — surface form annotated when it differs from this entity's canonical label.

Early Jurassic → follows → Late Triassic ⓘ

Triassic → subdividedInto → Late Triassic ⓘ

Watchung Mountains → geologicalPeriod → Late Triassic ⓘ

Palisades → hasGeologicalAge → Late Triassic ⓘ

Late Triassic → geochronologicUnit → Late Triassic self-linksurface differs ⓘ

this entity surface form: Late Triassic Epoch

Jasper Forest → geologicalAge → Late Triassic ⓘ

Coelophysis → geologicalPeriod → Late Triassic ⓘ