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]