Spiralia

E393481

Spiralia is a major clade of protostome animals that includes diverse invertebrate groups such as mollusks, annelids, and flatworms, characterized by spiral cleavage during early embryonic development.

All labels observed (1)

Label Occurrences
Spiralia canonical 3

How this entity was disambiguated

Statements (52)

Predicate Object
instanceOf animal clade
clade
protostome clade
alsoKnownAs spiralians
belongsTo Protostomia
bodySymmetry bilateral symmetry
cellFateDetermination mosaic development in many taxa
characterizedBy determinate cleavage
spiral cleavage
cleavageOrientation oblique to animal–vegetal axis
cleavagePattern quartet spiral cleavage
contrastedWith Deuterostomia
Ecdysozoa
developmentalMode protostomy
embryonicDevelopmentType spiral cleavage pattern
germLayerNumber triploblastic
habitatDiversity freshwater environments
marine environments
terrestrial environments
hasCommonAncestorWith other bilaterian animals
hasSubdivision Lophotrochozoa
Platyzoa
identifiedBy molecular phylogenetics
includes Acanthocephala
Annelida
Brachiopoda
Bryozoa
Cycliophora
Echiura
Entoprocta
Gastrotricha
Gnathostomulida
Micrognathozoa
Mollusca
Nematomorpha
Nemertea
Phoronida
Platyhelminthes
Rotifera
Sipuncula
various invertebrate phyla
includesOrganisms acoelomate animals
coelomate animals
pseudocoelomate animals
isPartOf Metazoa
kingdom Animalia
recognizedSince late 20th century
reproductionMode mostly sexual reproduction
subdivisionOf Bilateria
Eumetazoa
taxonRank clade
typicalLarvalForm trochophore larva in many groups

How these facts were elicited

Referenced by (3)

Full triples — surface form annotated when it differs from this entity's canonical label.

Lophotrochozoa partOf Spiralia
Nemertea clade Spiralia
Gastrotricha superphylum Spiralia