Ambulacraria
E108528
Ambulacraria is a major clade of deuterostome animals that unites echinoderms (such as starfish and sea urchins) with hemichordates (such as acorn worms) based on shared developmental and anatomical features.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Ambulacraria canonical | 2 |
How this entity was disambiguated
This entity first appeared as the object of triple T822126 — 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: Ambulacraria Context triple: [Deuterostomia, includes, Ambulacraria]
-
A.
Echinodermata
Echinodermata is a phylum of marine invertebrates that includes starfish, sea urchins, sand dollars, and sea cucumbers, characterized by radial symmetry and a water vascular system.
-
B.
Hemichordata
Hemichordata is a phylum of marine invertebrate animals, including acorn worms and pterobranchs, that share key developmental and anatomical features with chordates and echinoderms.
-
C.
Protostomia
Protostomia is a major clade of bilaterally symmetrical animals—including arthropods, mollusks, and annelids—characterized by a distinct embryonic development pattern in which the mouth typically forms before the anus.
-
D.
Lophotrochozoa
Lophotrochozoa is a major clade of protostome animals that includes diverse groups such as annelid worms, mollusks, and brachiopods, united by shared developmental and molecular characteristics.
-
E.
Cnidaria
Cnidaria is a phylum of mostly marine animals, including jellyfish, corals, sea anemones, and hydras, characterized by radial symmetry and specialized stinging cells called cnidocytes.
- 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: Ambulacraria Target entity description: Ambulacraria is a major clade of deuterostome animals that unites echinoderms (such as starfish and sea urchins) with hemichordates (such as acorn worms) based on shared developmental and anatomical features.
-
A.
Echinodermata
Echinodermata is a phylum of marine invertebrates that includes starfish, sea urchins, sand dollars, and sea cucumbers, characterized by radial symmetry and a water vascular system.
-
B.
Hemichordata
Hemichordata is a phylum of marine invertebrate animals, including acorn worms and pterobranchs, that share key developmental and anatomical features with chordates and echinoderms.
-
C.
Protostomia
Protostomia is a major clade of bilaterally symmetrical animals—including arthropods, mollusks, and annelids—characterized by a distinct embryonic development pattern in which the mouth typically forms before the anus.
-
D.
Lophotrochozoa
Lophotrochozoa is a major clade of protostome animals that includes diverse groups such as annelid worms, mollusks, and brachiopods, united by shared developmental and molecular characteristics.
-
E.
Cnidaria
Cnidaria is a phylum of mostly marine animals, including jellyfish, corals, sea anemones, and hydras, characterized by radial symmetry and specialized stinging cells called cnidocytes.
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
clade
ⓘ
deuterostome clade ⓘ |
| belongsTo | Deuterostomia ⓘ |
| characterizedBy |
blastopore becoming the anus
ⓘ
deuterostome development ⓘ enterocoelic coelom formation ⓘ radial cleavage ⓘ |
| commonName | Ambulacraria ⓘ |
| contains | benthic marine animals ⓘ |
| definedBy |
shared anatomical features
ⓘ
shared developmental features ⓘ |
| distinguishedFrom |
Chordata
ⓘ
Protostomia ⓘ |
| geologicalAge | at least Cambrian origin ⓘ |
| habitat | marine environments ⓘ |
| hasBodyPlanFeature |
stomochord in some hemichordate members
ⓘ
tripartite coelomic organization in many members ⓘ water vascular system in echinoderm members ⓘ |
| hasBodySymmetry |
bilateral symmetry in larvae
ⓘ
secondary radial symmetry in many adult echinoderms ⓘ |
| hasCirculatoryFeature | open or reduced circulatory systems ⓘ |
| hasCoelom | true coelom ⓘ |
| hasDevelopmentalMode | indirect development in many species ⓘ |
| hasFeedingMode |
grazing and predation in many echinoderms
ⓘ
suspension feeding in many hemichordates ⓘ |
| hasGeneticEvidence | conserved Hox gene clusters ⓘ |
| hasGillSlits | pharyngeal slits in hemichordate members ⓘ |
| hasLarvalType |
bilaterally symmetrical planktonic larvae
ⓘ
dipleurula-like larva ⓘ |
| hasMember |
acorn worms
ⓘ
pterobranchs ⓘ sea urchins ⓘ starfish ⓘ |
| hasNervousSystemFeature | circumoral nerve ring in larvae ⓘ |
| hasResearchUse |
comparative developmental biology
ⓘ
model for studying deuterostome evolution ⓘ |
| hasSkeletalFeature | endoskeleton of calcareous ossicles in echinoderm members ⓘ |
| includes |
Echinodermata
ⓘ
Hemichordata ⓘ |
| kingdom | Animalia ⓘ |
| phylogeneticPosition | sister group to Chordata within Deuterostomia ⓘ |
| recognizedIn | modern phylogenetic systematics ⓘ |
| sharesAncestralTraitsWith | Chordata ⓘ |
| subcladeOf | Deuterostomia ⓘ |
| supportedBy |
molecular phylogenetic evidence
ⓘ
morphological evidence ⓘ |
| taxonRank | clade ⓘ |
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: Ambulacraria Description of subject: Ambulacraria is a major clade of deuterostome animals that unites echinoderms (such as starfish and sea urchins) with hemichordates (such as acorn worms) based on shared developmental and anatomical features.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.