The Spiralia are a morphologically diverse clade of protostome animals, including within their number the molluscs, annelids, platyhelminths and other...
19 KB (1,489 words) - 15:20, 26 August 2024
deuterostome embryos differ in several other ways. Many protostomes (the Spiralia clade) undergo spiral cleavage during cell division instead of radial cleavage...
12 KB (916 words) - 19:35, 4 August 2024
Lophotrochozoa (category Spiralia)
(/ləˌfɒtroʊkoʊˈzoʊə/, "crest/wheel animals") is a clade of protostome animals within the Spiralia. The taxon was established as a monophyletic group based on molecular evidence...
15 KB (1,269 words) - 02:39, 2 August 2024
more superphyla among the protostomes, Ecdysozoa (molting animals) and Spiralia. The arrow worms (Chaetognatha) have proven difficult to classify; recent...
36 KB (2,522 words) - 14:04, 24 August 2024
priapulids), grouped together as Ecdysozoa. While annelids are placed among the Spiralia (making them more closely related to mollusks, flatworms and such), having...
30 KB (2,273 words) - 05:30, 15 July 2024
Lists of animals (section Spiralia)
Animals are multicellular eukaryotic organisms in the biological kingdom Animalia. With few exceptions, animals consume organic material, breathe oxygen...
8 KB (677 words) - 12:08, 26 July 2024
developmental features are at odds with deuterostomes and are either akin to Spiralia or unique to Chaetognatha. Molecular phylogeny shows that Chaetognatha...
46 KB (4,941 words) - 15:44, 4 August 2024
Gnathifera (clade) (category Spiralia)
gnathiferans are direct developers. Though gnathiferans are included in Spiralia, rotifers and chaetognaths do not exhibit spiral cleavage. Little is known...
18 KB (1,509 words) - 00:20, 19 August 2024
scientists have criticized this argument; saying it’s based on paraphyletic Spiralia, assignments of sexual modes for the phylum level than the species level...
51 KB (5,137 words) - 09:59, 1 August 2024