Chaetognatha
E393487
Chaetognatha, commonly known as arrow worms, are a phylum of predatory, transparent marine worms characterized by their torpedo-shaped bodies and grasping head spines.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Chaetognatha canonical | 2 |
How this entity was disambiguated
This entity first appeared as the object of triple T3841558 — 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: Chaetognatha Context triple: [Lophotrochozoa, includesTaxon, Chaetognatha]
-
A.
Thaliacea
Thaliacea is a class of free-floating, barrel-shaped marine tunicates that form part of the plankton and often live in colonies.
-
B.
Euphausiacea
Euphausiacea is an order of small, shrimp-like marine crustaceans known as krill, which form massive swarms and play a crucial role as primary consumers in ocean food webs.
-
C.
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.
-
D.
Holocephali
Holocephali is a subclass of cartilaginous fishes that includes the chimaeras, deep-sea relatives of sharks and rays characterized by a single gill opening and distinctive tooth plates.
-
E.
Charniodiscus
Charniodiscus is an extinct genus of frond-like marine organisms from the Ediacaran Period, known from soft-bodied fossils that represent some of the earliest complex multicellular life.
- 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: Chaetognatha Target entity description: Chaetognatha, commonly known as arrow worms, are a phylum of predatory, transparent marine worms characterized by their torpedo-shaped bodies and grasping head spines.
-
A.
Thaliacea
Thaliacea is a class of free-floating, barrel-shaped marine tunicates that form part of the plankton and often live in colonies.
-
B.
Euphausiacea
Euphausiacea is an order of small, shrimp-like marine crustaceans known as krill, which form massive swarms and play a crucial role as primary consumers in ocean food webs.
-
C.
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.
-
D.
Holocephali
Holocephali is a subclass of cartilaginous fishes that includes the chimaeras, deep-sea relatives of sharks and rays characterized by a single gill opening and distinctive tooth plates.
-
E.
Charniodiscus
Charniodiscus is an extinct genus of frond-like marine organisms from the Ediacaran Period, known from soft-bodied fossils that represent some of the earliest complex multicellular life.
- F. None of above. chosen
Statements (49)
| Predicate | Object |
|---|---|
| instanceOf |
phylum
ⓘ
taxon ⓘ |
| bodyCavityType | pseudocoelomate-like ⓘ |
| bodyPlan | worm-like ⓘ |
| bodyShape | torpedo-shaped ⓘ |
| bodyTransparency | transparent ⓘ |
| bodyWall | longitudinal muscles ⓘ |
| commonName | arrow worms ⓘ |
| containsOrder |
Aphragmophora
ⓘ
Phragmophora ⓘ |
| describedBy | Karl Georg Baird ⓘ |
| developmentType | direct development ⓘ |
| diet |
copepods
ⓘ
fish larvae ⓘ zooplankton ⓘ |
| distribution | worldwide oceans ⓘ |
| environment | marine ⓘ |
| etymology | from Greek 'chaite' (hair) and 'gnathos' (jaw) ⓘ |
| feedingType | predatory ⓘ |
| fertilizationType | internal fertilization ⓘ |
| firstDescriptionYear | 1853 ⓘ |
| fossilRange | Cambrian to Recent ⓘ |
| hasBodyRegion |
head
ⓘ
tail ⓘ trunk ⓘ |
| hasCuticle | true ⓘ |
| hasFossilRecord | true ⓘ |
| hasGraspingSpines | true ⓘ |
| hasGraspingSpinesOn | head ⓘ |
| hasSensoryStructure |
ciliary fence receptors
ⓘ
eyes ⓘ |
| kingdom | Animalia ⓘ |
| locomotion |
darting swimming
ⓘ
lateral body undulations ⓘ |
| nervousSystem | ganglionated nervous system ⓘ |
| notableGenus |
Sagitta
ⓘ
Spadella ⓘ |
| reproductionMode | sexual reproduction ⓘ |
| roleInEcosystem |
important zooplankton predator
ⓘ
link between primary consumers and higher predators ⓘ |
| segmentation | unsegmented body ⓘ |
| sexualSystem | hermaphroditic ⓘ |
| superphylum | Protostomia ⓘ |
| symmetry | bilateral symmetry ⓘ |
| trophicLevel | secondary consumer ⓘ |
| typicalHabitat |
benthic zone
ⓘ
pelagic zone ⓘ planktonic zone ⓘ |
| usedAs | indicator of water masses ⓘ |
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: Chaetognatha Description of subject: Chaetognatha, commonly known as arrow worms, are a phylum of predatory, transparent marine worms characterized by their torpedo-shaped bodies and grasping head spines.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.