Platytrochozoa

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Platytrochozoa
Scientific classification e
Kingdom: Animalia
(unranked): Spiralia
Clade: Platytrochozoa
Struck et al. 2014
clade

The Platytrochozoa are proposed basal clade of spiralian animals as 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

Lophotrochozoa

An alternative phylogeny was given in 2019, with a basal grouping Molusca with Entoprocta grouping named Tetraneuralia, and a second grouping of Nemertea with Platyhelminthes named Parenchymia as sister of Annelida. In their proposal, Lophotrochozoa would become roughly synonymous with Platytrochozoa, and Rouphozoa is unsupported.[3]

References[edit]

  1. ^ 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.
  2. ^ 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). doi:10.1186/s40851-017-0068-5.
  3. ^ Rokhsar, Daniel S.; Satoh, Noriyuki; Goto, Taichiro; Peijnenburg, Katja T. C. A.; Marlétaz, Ferdinand (2019-01-10). "A New Spiralian Phylogeny Places the Enigmatic Arrow Worms among Gnathiferans". Current Biology. 0 (0). doi:10.1016/j.cub.2018.11.042. ISSN 0960-9822.