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 |
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
clade
ⓘ
deuterostome clade ⓘ |
| belongsTo | Deuterostomia ⓘ |
| characterizedBy |
blastopore becoming the anus
ⓘ
deuterostome development ⓘ enterocoelic coelom formation ⓘ radial cleavage ⓘ |
| commonName | Ambulacraria self-link ⓘ |
| 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 ⓘ |
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.