Platyhelminthes

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] PreЄ Є O S D C P T J K Pg N Possible Ordovician and Devonian records[2]
Bedford's flatwirm, Pseudobiceros bedfordi
Scientific classification
Kinrick:	Animalia
Clade:	Rouphozoa
Phylum:	Platyhelminthes Claus, 1887
Clesses
Tradeetional: Turbellaria Trematoda Monogenea Cestoda Phylogenetic: Catenulida Rhabditophora
Synonyms
Plathelminthes Schneider, 1873[3]

References

1. Dentzien-Dias, PC; Poinar, G Jr; de Figueiredo, AE; Pacheco, AC; Horn, BL; Schultz, CL (30 Januar 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. Ehlers, U.; Sopott-Ehlers, B. (Juin 1995). Plathelminthes or Platyhelminthes?. Hydrobiologia. 305. pp. 1–2. Bibcode:2004HyBio.524..167W. doi:10.1007/BF00036354. ISBN 9789401100458.