, Volume 132, Issue 1, pp 1-12

First online:

Comments on a phylogenetic system of the Platyhelminthes

  • Ulrich EhlersAffiliated withII. Zoologisches Institut and Museum der Universität

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Using the principles and methods of phylogenetic systematics, the phylogenetic relationships among the basic closed descendent communities (monophyla) of the taxon Platyhelminthes are discussed.

A phylogenetic system of the Platyhelminthes is presented and several hypothesized autapomorphies of the well-known main subordinated monophyla of free-living and parasitic platyhelminths are named. A monophylum ‘Turbellaria’ does not exist in reality.


Platyhelminthes phylogenetic system frontal organ epidermis ciliary epidermal receptors protonephridium