Sigillaria
E571121
Sigillaria is an extinct genus of tall, spore-bearing lycopsid trees that dominated Carboniferous coal swamp forests.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Sigillaria canonical | 3 |
How this entity was disambiguated
This entity first appeared as the object of triple T6108897 — 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: Sigillaria Context triple: [Joggins Fossil Cliffs, containsFossilsOf, Sigillaria]
-
A.
Lepidodendron
Lepidodendron is an extinct genus of giant, tree-like lycopsid plants that dominated Carboniferous coal swamp forests.
-
B.
Rhynia
Rhynia is an extinct genus of simple, leafless vascular plants from the Early Devonian period that represents one of the earliest well-preserved examples of land plant evolution.
-
C.
Aglaophyton
Aglaophyton is an extinct early land plant from the Early Devonian period, known for its simple, leafless branching stems and importance in understanding the evolution of vascular plants.
-
D.
Asteroxylon mackiei
Asteroxylon mackiei is an early Devonian vascular land plant known from exceptionally well-preserved fossils that provide key insights into the evolution of plant structure and terrestrialization.
-
E.
Horneophyton lignieri
Horneophyton lignieri is an early Devonian land plant known from the Rhynie Chert, notable for its simple vascular structure and significance in understanding the evolution of terrestrial flora.
- 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: Sigillaria Target entity description: Sigillaria is an extinct genus of tall, spore-bearing lycopsid trees that dominated Carboniferous coal swamp forests.
-
A.
Lepidodendron
Lepidodendron is an extinct genus of giant, tree-like lycopsid plants that dominated Carboniferous coal swamp forests.
-
B.
Rhynia
Rhynia is an extinct genus of simple, leafless vascular plants from the Early Devonian period that represents one of the earliest well-preserved examples of land plant evolution.
-
C.
Aglaophyton
Aglaophyton is an extinct early land plant from the Early Devonian period, known for its simple, leafless branching stems and importance in understanding the evolution of vascular plants.
-
D.
Asteroxylon mackiei
Asteroxylon mackiei is an early Devonian vascular land plant known from exceptionally well-preserved fossils that provide key insights into the evolution of plant structure and terrestrialization.
-
E.
Horneophyton lignieri
Horneophyton lignieri is an early Devonian land plant known from the Rhynie Chert, notable for its simple vascular structure and significance in understanding the evolution of terrestrial flora.
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
extinct genus
ⓘ
fossil plant genus ⓘ lycopsid ⓘ vascular plant ⓘ |
| associatedWith |
Calamites
ⓘ
Cordaites ⓘ Lepidodendron ⓘ |
| barkCharacteristic |
leaf-scar rows forming seal-like patterns
ⓘ
vertically ribbed bark ⓘ |
| barkPatternResemblance | rows of seal-like leaf scars ⓘ |
| class |
Lycopsida
ⓘ
linked to:
Lycopodiophyta
|
| coalBallFloras | present in Carboniferous coal balls ⓘ |
| contributedTo | formation of coal seams ⓘ |
| declineReason | climatic and environmental changes near end of Carboniferous ⓘ |
| dispersalMethod | spore dispersal by wind ⓘ |
| division | Lycopodiophyta ⓘ |
| dominantIn | Carboniferous coal-forming wetlands ⓘ |
| ecologicalRole | canopy-forming tree in coal swamps ⓘ |
| environment | wet lowland environments ⓘ |
| family | Sigillariaceae ⓘ |
| firstAppearance | Late Mississippian ⓘ |
| fossilRecordRegion |
Asia
ⓘ
Europe ⓘ North America ⓘ |
| geologicalPeriod |
Carboniferous
ⓘ
linked to:
Carboniferous period
|
| growthForm | tree ⓘ |
| habitat | coal swamp forests ⓘ |
| isExtinct | true ⓘ |
| kingdom | Plantae ⓘ |
| knownFrom |
compression fossils
ⓘ
impression fossils ⓘ permineralized remains ⓘ |
| lastAppearance | Late Pennsylvanian ⓘ |
| leafAttachment | leaves attached directly to stem ⓘ |
| leafType | simple narrow leaves ⓘ |
| namedAfter | Latin word for little seals (sigilla) ⓘ |
| order |
Lepidodendrales
ⓘ
linked to:
Lepidodendron
|
| paleoecology | grew in dense stands in swampy substrates ⓘ |
| photosynthesisType | terrestrial photosynthetic plant ⓘ |
| primarySupportTissue | cortex and periderm ⓘ |
| reproductionType | spore-bearing ⓘ |
| reproductiveStructure | sporangia in cones (strobili) ⓘ |
| rootSystem | stigmarian roots ⓘ |
| stemType | arborescent lycophyte stem ⓘ |
| trunkCharacteristic | unbranched or sparsely branched upper trunk ⓘ |
| typicalHeight | up to about 30 meters ⓘ |
| woodType | secondary xylem poorly developed ⓘ |
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: Sigillaria Description of subject: Sigillaria is an extinct genus of tall, spore-bearing lycopsid trees that dominated Carboniferous coal swamp forests.
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.