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The flatwirms, flat wirms, Platyhelminthes, Plathelminthes, or platyhelminths (frae the Greek πλατύ, platy, meanin "flat" an ἕλμινς (root: ἑλμινθ-), helminth-, meanin "wirm")[3] are a phylum o relatively simple bilaterian, unsegmentit, saft-bouked invertebrates.

Flatwirm
Temporal range: 270–0 Ma[1]
Possible Ordovician and Devonian records[2]
Bedford's Flatworm.jpg
Bedford's flatwirm, Pseudobiceros bedfordi
Scientific classification e
Kinrick: Animalia
Clade: Rouphozoa
Phylum: Platyhelminthes
Claus, 1887
Clesses

Tradeetional:

Phylogenetic:

Synonyms
  • Plathelminthes Schneider, 1873[3]

ReferencesEedit

  1. Dentzien-Dias, PC; Poinar, G Jr; de Figueiredo, AE; Pacheco, AC; Horn, BL; Schultz, CL (30 January 2013). "Tapeworm eggs in a 270 million-year-old shark coprolite". PLOS ONE. 8 (1): e55007. Bibcode:2013PLoSO...855007D. doi:10.1371/journal.pone.0055007. PMC 3559381 . PMID 23383033. 
  2. Dirk Knaust; André Desrochers (2019). "Exceptionally preserved soft-bodied assemblage in Ordovician carbonates of Anticosti Island, eastern Canada". Gondwana Research. 71: 117–128. doi:10.1016/j.gr.2019.01.016. 
  3. 3.0 3.1 Ehlers, U.; Sopott-Ehlers, B. (June 1995). Plathelminthes or Platyhelminthes?. Hydrobiologia. 305. pp. 1–2. Bibcode:2004HyBio.524..167W. doi:10.1007/BF00036354. ISBN 9789401100458.