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Radiata
Sign in to saveRadiata or Radiates is a historical taxonomic rank that was used to classify animals with radially symmetric body plans. The term Radiata is no longer accepted, as it united several different groupings of animals that do not form a monophyletic group under current views of animal phylogeny. The similarities once offered in justification of the taxon, such as radial symmetry, are now taken to be the result of either incorrect evaluations by early researchers or convergent evolution, rather than an indication of a common ancestor. Because of this, the term is used mostly in a historical context.
OverviewAI-generated
Radiata is a taxon classified as a polyphyly within the parent group Eumetazoa. It was described in the Encyclopædia Britannica 11th edition and has a start time of about 610 million years ago. The subject is associated with the main category Category:Radiata and the Commons category Animalia.
In the World Register of Marine Species, Radiata is listed as a genus within the family Rissoidae, order Littorinimorpha, class Gastropoda, and phylum Mollusca. Its habitat is marine, and its status is unaccepted. iDigBio records two entries for this taxon, held by institutions QM and CUP, with no associated media.
Separately, iNaturalist lists a species with the common name White beggarticks under the iconic taxon Plantae. This plant entry has 90,204 observations. The name Radiata is referenced by 51 other encyclopedia articles.
Synthesized by Vinony from 24 facts across 5 sources: Wikidata, iNaturalist, WoRMS, iDigBio, Vinony graph. Generated from structured data (not the Wikipedia text) and checked against those facts — may still contain errors.
Species
White beggarticks
Genus
- PhylumMollusca
- ClassGastropoda
- OrderLittorinimorpha
- FamilyRissoidae
via
Wikidata facts
Show 4 more facts
- Commons category
- Animalia
- taxon name
- Radiata
- topic's main category
- Category:Radiata
- start time
- 610000000-
Sources (2)
via Wikidata · CC0
~3 min read
Encyclopedic overview
1 sectionsContents
- References
Radiata or Radiates is a historical taxonomic rank that was used to classify animals with radially symmetric body plans. The term Radiata is no longer accepted, as it united several different groupings of animals that do not form a monophyletic group under current views of animal phylogeny. The similarities once offered in justification of the taxon, such as radial symmetry, are now taken to be the result of either incorrect evaluations by early researchers or convergent evolution, rather than an indication of a common ancestor. Because of this, the term is used mostly in a historical context.
In the early 19th century, Georges Cuvier united Ctenophora and Cnidaria in the Radiata (Zoophytes). Thomas Cavalier-Smith, in 1983, redefined Radiata as a subkingdom consisting of Myxozoa, Placozoa, Cnidaria and Ctenophora. Lynn Margulis and K. V. Schwartz later redefined Radiata in their Five Kingdom classification, this time including only Cnidaria and Ctenophora. This definition is similar to the historical descriptor Coelenterata, which has also been proposed as a group encompassing Cnidaria and Ctenophora.
Excerpted from Wikipedia’s “Radiata” article, available under the CC BY-SA 4.0 licence.