Petromyzon
E710959
Petromyzon is a genus of jawless, eel-like lampreys known for their parasitic, blood-feeding lifestyle in marine and freshwater environments.
All labels observed (3)
| Label | Occurrences |
|---|---|
| Petromyzon canonical | 4 |
| Petromyzon marinus | 2 |
| Petromyzon marinus (sea lamprey) | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T7971388 — 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: Petromyzon Context triple: [Petromyzontidae, typeGenus, Petromyzon]
-
A.
Petromyzontidae
Petromyzontidae is a family of jawless, eel-like parasitic and non-parasitic lampreys found in freshwater and coastal marine environments worldwide.
-
B.
Lampetra fluviatilis
Lampetra fluviatilis, commonly known as the European river lamprey, is a jawless, eel-like parasitic fish native to European rivers and coastal waters.
-
C.
Acipenser
Acipenser is a genus of sturgeon fishes known for their ancient evolutionary lineage and importance as a source of caviar.
-
D.
Branchiostoma
Branchiostoma is a genus of small, fish-like lancelets that are key model organisms in evolutionary biology for understanding the early evolution of chordates.
-
E.
Somateria fischeri
Somateria fischeri is a large, sea-duck species known as the spectacled eider, distinguished by its striking facial markings and breeding in Arctic coastal regions of Alaska and Siberia.
- 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: Petromyzon Target entity description: Petromyzon is a genus of jawless, eel-like lampreys known for their parasitic, blood-feeding lifestyle in marine and freshwater environments.
-
A.
Petromyzontidae
Petromyzontidae is a family of jawless, eel-like parasitic and non-parasitic lampreys found in freshwater and coastal marine environments worldwide.
-
B.
Lampetra fluviatilis
Lampetra fluviatilis, commonly known as the European river lamprey, is a jawless, eel-like parasitic fish native to European rivers and coastal waters.
-
C.
Acipenser
Acipenser is a genus of sturgeon fishes known for their ancient evolutionary lineage and importance as a source of caviar.
-
D.
Branchiostoma
Branchiostoma is a genus of small, fish-like lancelets that are key model organisms in evolutionary biology for understanding the early evolution of chordates.
-
E.
Somateria fischeri
Somateria fischeri is a large, sea-duck species known as the spectacled eider, distinguished by its striking facial markings and breeding in Arctic coastal regions of Alaska and Siberia.
- F. None of above. chosen
Statements (45)
| Predicate | Object |
|---|---|
| instanceOf |
genus
ⓘ
taxon ⓘ |
| belongsToGroup |
agnathans
ⓘ
cyclostomes ⓘ
linked to:
Agnatha
|
| class | Hyperoartia ⓘ |
| describedAs |
eel-like
ⓘ
jawless ⓘ parasitic ⓘ |
| distribution | Northern Hemisphere ⓘ |
| domain |
Eukaryota
ⓘ
linked to:
Eukarya
|
| ecologicalRole | ectoparasite of fishes ⓘ |
| family | Petromyzontidae ⓘ |
| feedingInAdultStage | parasitic on other fishes ⓘ |
| feedingInLarvalStage | filter-feeding ⓘ |
| feedingType | hematophagous ⓘ |
| habitat |
freshwater environments
ⓘ
marine environments ⓘ |
| hasCirculatoryFeature | two-chambered heart ⓘ |
| hasCommonName | lampreys ⓘ |
| hasMember | sea lamprey ⓘ |
| hasMorphologicalFeature |
cartilaginous skeleton
ⓘ
circular suctorial mouth ⓘ dorsal fin or fins ⓘ keratinous teeth ⓘ no jaws ⓘ no paired fins ⓘ single median nostril ⓘ |
| hasNotochord | persistent notochord in adults ⓘ |
| hasSkeletonType | cartilaginous endoskeleton ⓘ |
| hasSpecies |
Petromyzon marinus
ⓘ
linked to:
Petromyzon
|
| impact | can be a pest in invaded freshwater systems ⓘ |
| kingdom | Animalia ⓘ |
| lifeStage | ammocoete larval stage in sediment ⓘ |
| lifestyle | blood-feeding ⓘ |
| locomotion | anguilliform swimming ⓘ |
| notableSpecies |
Petromyzon marinus (sea lamprey)
ⓘ
linked to:
Petromyzon
|
| order | Petromyzontiformes ⓘ |
| parentTaxon | Petromyzontidae ⓘ |
| phylum | Chordata ⓘ |
| reproduction | anadromous spawning in freshwater for many species ⓘ |
| respiration | gills ⓘ |
| sensorySystem |
well-developed lateral line system
ⓘ
well-developed olfactory system ⓘ |
| taxonRank | genus ⓘ |
| typeSpecies |
Petromyzon marinus
ⓘ
linked to:
Petromyzon
|
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: Petromyzon Description of subject: Petromyzon is a genus of jawless, eel-like lampreys known for their parasitic, blood-feeding lifestyle in marine and freshwater environments.
Referenced by (7)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: Petromyzon
linked to: Petromyzon
linked to: Petromyzon