| Childiidae Adeloposthia An der Lan, 1936 | | w | latest taxonomic authority | |
| Aphanostoma auritum flavescens Westblad, 1946 | | w | latest taxonomic authority | |
| Aphanostoma lutheri Westblad, 1946 | | w | latest taxonomic authority | |
| Avagina incola Leiper, 1902 | [with synonyms] | w | latest taxonomic authority | |
| Convolutidae Proaphanostoma An der Lan, 1936 | | w | latest taxonomic authority | |
| Proaphanostoma viride An der Lan, 1936 | | w | latest taxonomic authority | |
| Mecynostomum rhomboides Westblad, 1946 | | w | latest taxonomic authority | |
| incertae sedis Paraconvoluta Westblad, 1946 | | w | latest taxonomic authority | |
| Paraconvoluta virescens Westblad, 1946 | | w | latest taxonomic authority | |
| Convoluta minima Westblad, 1948 | | w | primary taxonomic authority (describer) | |
| Acoela Haploposthiidae Westblad, 1948 | | w | primary taxonomic authority (describer) | |
| Eumecynostomum bathycolum (Westblad, 1948) | [with synonyms] | w | primary taxonomic authority (describer) | |
| Mecynostomum bathycola Westblad, 1948 | | w | primary taxonomic authority (describer) | |
| Mecynostomum macrospiriferum (Westblad, 1946) | | w | other taxonomic work | |
| Pseudmecynostomum bathycolum (Westblad, 1948) | | w | primary taxonomic authority (describer) | |
| Crucimusculata Otocelididae Westblad, 1948 | | w | primary taxonomic authority (describer) | |
| Mecynostomum tenuissimum (Westblad, 1946) | | w | other taxonomic work | |
| Aphanostoma auritum Westblad, 1946 | | w | other taxonomic work | |
| Trepaxonemata Neoophora Westblad, 1948 | | w | primary taxonomic authority (describer) | 67 |
| Anaperus tvaerminnensis (Luther, 1912) | | w | other taxonomic work | 11, 16, 19, 23, 54, 58, 70, 71, f. 3 B |
| Mecynostomum auritum (Schultze, 1851) | [with synonyms] | w | other taxonomic work | 14, 15, 40, 41, 50, 70, 72 |
| Convoluta saliens (Graff, 1882) | | w | other taxonomic work | 14, 15, 40,48, 50, 68, 70, f. 9 G |
| Convoluta karlingi Westblad, 1946 | | w | other taxonomic work | 22, 38, 48, 51, 70, f. 8 A |
| Mecynostomum lutheri (Westblad, 1946) | | w | other taxonomic work | 3, 70 |