Platytrochozoa
From Wikipedia, the free encyclopedia
| Platytrochozoa | |
|---|---|
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| Garden snail (Cornu aspersum) a basal platytrochozoan | |
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| Barentsia laxa colony (Entoprocta) | |
Scientific classification  | |
| Kingdom: | Animalia |
| Subkingdom: | Eumetazoa |
| Clade: | ParaHoxozoa |
| Clade: | Bilateria |
| Clade: | Nephrozoa |
| Clade: | Protostomia |
| Clade: | Spiralia |
| Clade: | Platytrochozoa Struck et al. 2014 |
| Clade | |
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 |
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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]
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In the 2022 study the Platytrochozoa clade is not recovered at all; spiralians (in this case identical with the Lophotrochozoa according to its definition) are divided into "Platyzoa s.l." (traditional Platyzoa expanded to include Bryozoa and Mesozoa) and Trochozoa clades:[4]
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