[organisms] see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Phylum Platyhelminthes Gegenbaur, 1859 - flatworms
     Class Turbellaria Ehrenberg, 1831 - planarians see Subphylum Turbellaria Ehrenberg, 1831
       Order Acoela Uljanin, 1870 - acoels see Class Acoela Uljanin, 1870
         Family Childiidae Dörjes, 1968
           01 Genus Actinoposthia An der Lan, 1936
           02 Genus Adeloposthia An der Lan, 1936
           03 Genus Archactinoposthia Dorjes, 1968
           04 Genus Atriofronta Dorjes, 1968
           05 Genus Childia Graff, 1911
           06 Genus Microposthia Faubel, 1974
           07 Genus Paraphanostoma Westblad, 1942
           08 Genus Paraproporus Westblad, 1945
           09 Genus Pelophila Dörjes, 1968, nom. illeg.
           10 Genus Philactinoposthia Dorjes, 1968
           11 Genus Pseudactinoposthia Dorjes, 1968