Hexagonaria percarinata
E347632
Hexagonaria percarinata is an extinct Devonian rugose coral whose fossilized remains are famously known as Petoskey stones, the state stone of Michigan.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Hexagonaria percarinata canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T3302912 — 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: Hexagonaria percarinata Context triple: [Petoskey stones, taxonOfOrigin, Hexagonaria percarinata]
-
A.
Anesidora
Anesidora is an epithet of the Greek goddess Demeter that emphasizes her role as the giver of gifts, especially the bounty of the earth.
-
B.
Paracanthurus hepatus
Paracanthurus hepatus is a brightly colored Indo-Pacific reef fish, commonly known as the blue tang or regal tang, popularized worldwide by the character Dory in the film "Finding Nemo."
-
C.
Ancylus fluviatilis
Ancylus fluviatilis is a small freshwater limpet-like snail (an aquatic gastropod mollusk) commonly found in European rivers and streams.
-
D.
Metischnogaster
Metischnogaster is a genus of small, primitively eusocial hover wasps within the subfamily Stenogastrinae, known for their distinctive nesting behavior in tropical Asia.
-
E.
Penelope bridgesi
Penelope bridgesi is a species of guan, a medium-sized arboreal game bird in the family Cracidae native to Neotropical forests.
- 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: Hexagonaria percarinata Target entity description: Hexagonaria percarinata is an extinct Devonian rugose coral whose fossilized remains are famously known as Petoskey stones, the state stone of Michigan.
-
A.
Anesidora
Anesidora is an epithet of the Greek goddess Demeter that emphasizes her role as the giver of gifts, especially the bounty of the earth.
-
B.
Paracanthurus hepatus
Paracanthurus hepatus is a brightly colored Indo-Pacific reef fish, commonly known as the blue tang or regal tang, popularized worldwide by the character Dory in the film "Finding Nemo."
-
C.
Ancylus fluviatilis
Ancylus fluviatilis is a small freshwater limpet-like snail (an aquatic gastropod mollusk) commonly found in European rivers and streams.
-
D.
Metischnogaster
Metischnogaster is a genus of small, primitively eusocial hover wasps within the subfamily Stenogastrinae, known for their distinctive nesting behavior in tropical Asia.
-
E.
Penelope bridgesi
Penelope bridgesi is a species of guan, a medium-sized arboreal game bird in the family Cracidae native to Neotropical forests.
- F. None of above. chosen
Statements (40)
| Predicate | Object |
|---|---|
| instanceOf |
extinct species
ⓘ
fossil taxon ⓘ rugose coral ⓘ |
| ageInMillionsOfYears | approximately 350–400 million years ago ⓘ |
| associatedWith |
Lake Michigan shoreline
ⓘ
Little Traverse Bay ⓘ |
| category |
Devonian coral
ⓘ
fossils of the United States ⓘ |
| class | Anthozoa ⓘ |
| commonName |
Petoskey stones
ⓘ
surface form:
Petoskey stone coral
|
| displayedIn | natural history museums in Michigan ⓘ |
| ecologicalRole | reef-building coral ⓘ |
| environment | shallow marine ⓘ |
| family | Disphyllidae ⓘ |
| fossilForm |
Petoskey stones
ⓘ
surface form:
Petoskey stone
|
| fossilRange | Devonian ⓘ |
| fossilsFoundIn |
Great Lakes region
ⓘ
Michigan ⓘ Midwestern United States ⓘ |
| genus | Hexagonaria ⓘ |
| geologicalPeriod | Devonian ⓘ |
| kingdom | Animalia ⓘ |
| lithologyContext | limestone ⓘ |
| morphology |
colonial coral
ⓘ
hexagonal corallites ⓘ |
| notableAs | source of Petoskey stones ⓘ |
| order | Rugosa ⓘ |
| patternDescription | honeycomb-like surface pattern ⓘ |
| phylum | Cnidaria ⓘ |
| preservation | polished as ornamental stone ⓘ |
| recognizedAs | state stone of Michigan via its fossils ⓘ |
| relatedTo | Michigan state symbols ⓘ |
| scientificDiscipline |
paleobiology
ⓘ
paleontology ⓘ |
| skeletonComposition | calcium carbonate ⓘ |
| stateSymbolOf | Michigan ⓘ |
| status | extinct ⓘ |
| timePeriod | Middle Devonian ⓘ |
| usedFor |
jewelry
ⓘ
souvenirs ⓘ |
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: Hexagonaria percarinata Description of subject: Hexagonaria percarinata is an extinct Devonian rugose coral whose fossilized remains are famously known as Petoskey stones, the state stone of Michigan.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.