Ediacaran Period
E221814
The Ediacaran Period was a late Precambrian geological interval, roughly 635–541 million years ago, marked by the emergence of some of the earliest large, complex multicellular life forms.
All labels observed (4)
| Label | Occurrences |
|---|---|
| Ediacaran Period canonical | 19 |
| Ediacaran | 8 |
| Ediacaran period | 4 |
| Ediacaran System | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T1966321 — 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: Ediacaran Period Context triple: [Ediacaran biota, partOf, Ediacaran Period]
-
A.
Cambrian Period
The Cambrian Period was an early division of geologic time marked by a rapid diversification of life known as the "Cambrian explosion," during which most major animal groups first appeared in the fossil record.
-
B.
Neoproterozoic Era
The Neoproterozoic Era was the final era of the Proterozoic Eon, marked by global “Snowball Earth” glaciations and the emergence of early multicellular life leading up to the Cambrian explosion.
-
C.
Proterozoic Eon
The Proterozoic Eon is a major division of Precambrian time, spanning from about 2.5 billion to 541 million years ago, marked by the buildup of atmospheric oxygen, the emergence of complex single-celled and early multicellular life, and the assembly of large continental landmasses.
-
D.
Paleozoic Era
The Paleozoic Era was an ancient geologic time interval, spanning roughly 541 to 252 million years ago, marked by the emergence and diversification of complex life in the seas and on land and the assembly of major continental landmasses.
-
E.
Ordovician Period
The Ordovician Period was a Paleozoic era interval marked by extensive marine biodiversity, the diversification of early vertebrates and invertebrates, and ending with one of Earth's major mass extinction events.
- 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: Ediacaran Period Target entity description: The Ediacaran Period was a late Precambrian geological interval, roughly 635–541 million years ago, marked by the emergence of some of the earliest large, complex multicellular life forms.
-
A.
Cambrian Period
The Cambrian Period was an early division of geologic time marked by a rapid diversification of life known as the "Cambrian explosion," during which most major animal groups first appeared in the fossil record.
-
B.
Neoproterozoic Era
The Neoproterozoic Era was the final era of the Proterozoic Eon, marked by global “Snowball Earth” glaciations and the emergence of early multicellular life leading up to the Cambrian explosion.
-
C.
Proterozoic Eon
The Proterozoic Eon is a major division of Precambrian time, spanning from about 2.5 billion to 541 million years ago, marked by the buildup of atmospheric oxygen, the emergence of complex single-celled and early multicellular life, and the assembly of large continental landmasses.
-
D.
Paleozoic Era
The Paleozoic Era was an ancient geologic time interval, spanning roughly 541 to 252 million years ago, marked by the emergence and diversification of complex life in the seas and on land and the assembly of major continental landmasses.
-
E.
Ordovician Period
The Ordovician Period was a Paleozoic era interval marked by extensive marine biodiversity, the diversification of early vertebrates and invertebrates, and ending with one of Earth's major mass extinction events.
- F. None of above. chosen
Statements (49)
| Predicate | Object |
|---|---|
| instanceOf |
Precambrian period
ⓘ
geological period ⓘ |
| associatedWith |
evolution of early ecosystems with tiered communities
ⓘ
increase in atmospheric oxygen ⓘ |
| biologicalSignificance |
first appearance of large benthic communities
ⓘ
precursor to Cambrian explosion ⓘ |
| boundaryDefinedBy | GSSP at Enorama Creek, Flinders Ranges, South Australia ⓘ |
| characterizedBy |
earliest large complex multicellular organisms
ⓘ
global diversification of multicellular life ⓘ soft-bodied macrofossils ⓘ |
| chronostratigraphicUnit |
Ediacaran Period
self-linksurface differs
ⓘ
surface form:
Ediacaran System
|
| climate |
generally oxygenating oceans
ⓘ
post-glacial warming ⓘ |
| contains | Ediacaran biota ⓘ |
| endTime | approximately 541 million years ago ⓘ |
| extinctionEvent | end-Ediacaran biotic turnover ⓘ |
| followedBy | Cambrian Period ⓘ |
| follows | Cryogenian Period ⓘ |
| fossilPreservationStyle |
death masks under microbial mats
ⓘ
impressions in fine-grained sediments ⓘ |
| geologicTimeScaleRank | period ⓘ |
| globalDistributionOfBiota | cosmopolitan ⓘ |
| importantFossilLocality |
Charnwood Forest, England
ⓘ
Ediacara Hills, South Australia ⓘ Mistaken Point, Newfoundland, Canada ⓘ Nama Group, Namibia ⓘ White Sea coast ⓘ
surface form:
White Sea region, Russia
|
| includesBiota |
dickinsoniomorphs
ⓘ
early bilaterian-like organisms ⓘ erniettomorphs ⓘ rangeomorphs ⓘ tribrachidians ⓘ |
| lowerBoundaryMarker | cap carbonate overlying Marinoan glacial deposits ⓘ |
| namedAfter |
Ediacara Hills, South Australia
ⓘ
surface form:
Ediacara Hills
|
| namedBy | Reginald C. Sprigg ⓘ |
| paleogeography |
assembly of Gondwana
ⓘ
fragmentation of supercontinent Rodinia remnants ⓘ |
| partOf | Neoproterozoic Era ⓘ |
| positionInPrecambrian | latest Precambrian period ⓘ |
| precededByEvent |
Snowball Earth glaciations
ⓘ
surface form:
Cryogenian glaciations
|
| ratificationYear |
2004
ⓘ
2005 ⓘ |
| ratifiedBy | International Union of Geological Sciences ⓘ |
| sedimentaryRecord |
stromatolitic carbonates
ⓘ
widespread shallow-marine siliciclastic deposits ⓘ |
| startTime | approximately 635 million years ago ⓘ |
| subdivisionOf | Proterozoic Eon ⓘ |
| timeSpan | about 94 million years ⓘ |
| upperBoundaryMarker | first appearance of complex trace fossils (Treptichnus pedum) near base of Cambrian ⓘ |
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: Ediacaran Period Description of subject: The Ediacaran Period was a late Precambrian geological interval, roughly 635–541 million years ago, marked by the emergence of some of the earliest large, complex multicellular life forms.
Referenced by (32)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject surface form:
Pannotia
this entity surface form:
Ediacaran period
this entity surface form:
Ediacaran
this entity surface form:
Ediacaran
this entity surface form:
Ediacaran period
this entity surface form:
Ediacaran
this entity surface form:
Ediacaran
this entity surface form:
Ediacaran period
this entity surface form:
Ediacaran period
subject surface form:
Charnwood Forest
this entity surface form:
Ediacaran
this entity surface form:
Ediacaran System
this entity surface form:
Ediacaran
this entity surface form:
Ediacaran
this entity surface form:
Ediacaran