Basal clade of protostome animals
| Platytrochozoa |
Scientific classification  |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Subkingdom: | Eumetazoa |
| Clade: | ParaHoxozoa |
| Clade: | Bilateria |
| Clade: | Nephrozoa |
| (unranked): | Protostomia |
| (unranked): | Spiralia |
| Clade: | Platytrochozoa
Struck et al. 2014 |
| Clade |
- Rouphozoa
- Lophotrochozoa
- Mesozoa
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The Platytrochozoa are a proposed basal clade of spiralian animals as the sister group of the Gnathifera. The Platytrochozoa were divided into the Rouphozoa and the Lophotrochozoa.[1] A more recent study suggests that the mesozoans also belong to this group of animals, as sister of the Rouphozoa.[2]
| Spiralia | | | Gnathifera | | | | Platytrochozoa | | | | Rouphozoa | | | Gastrotricha | | | | | Platyhelminthes | | | | | | | | Mesozoa | | | | | | | | | | | | | | |
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An alternative phylogeny was given in 2019, with a basal grouping of Mollusca and Entoprocta named Tetraneuralia, and a second grouping of Nemertea and Platyhelminthes named Parenchymia as sister of Annelida. In this proposal, Lophotrochozoa would become roughly synonymous with Platytrochozoa, and Rouphozoa would be unsupported.[3]
References
- ^ Struck, Torsten H.; Wey-Fabrizius, Alexandra R.; Golombek, Anja; Hering, Lars; Weigert, Anne; Bleidorn, Christoph; Klebow, Sabrina; Iakovenko, Nataliia; Hausdorf, Bernhard (2014-07-01). "Platyzoan Paraphyly Based on Phylogenomic Data Supports a Noncoelomate Ancestry of Spiralia". Molecular Biology and Evolution. 31 (7): 1833–1849. doi:10.1093/molbev/msu143. PMID 24748651.
- ^ Lu, Tsai-Ming; Kanda, Miyuki; Satoh, Noriyuki; Furuya, Hidetaka (2017). "The phylogenetic position of dicyemid mesozoans offers insights into spiralian evolution". Zoological Letters. 3 (1): 6. doi:10.1186/s40851-017-0068-5. PMC 5447306. PMID 28560048.
- ^ Marlétaz, Ferdinand; Peijnenburg, Katja T.C.A.; Goto, Taichiro; Satoh, Noriyuki; Rokhsar, Daniel S. (2019). "A New Spiralian Phylogeny Places the Enigmatic Arrow Worms among Gnathiferans". Current Biology. 29 (2): 312–318.e3. doi:10.1016/j.cub.2018.11.042. ISSN 0960-9822. PMID 30639106.
- Domain
- Archaea
- Bacteria
- Eukaryota
- (major groups
- Excavata
- Diaphoretickes
- Hacrobia
- Rhizaria
- Alveolata
- Stramenopiles
- Plants
- Amorphea
- Amoebozoa
- Opisthokonta
- Animals
- Fungi)
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- Phyla with ≥1000 extant species bolded
- Potentially dubious phyla †
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