Eukaryota | Animalia | Echinodermata | Echinozoa | Holothuroidea | Actinopoda | Dendrochirotida | Heterothyonidae | Heterothyone
COL:CS5HF | COL:N | COL:CHN | COL:7NF2T | COL:B8V3W | COL:844G6 | COL:7NF9H | COL:7NHTC | COL:7P5YZ
(Chatton, 1925) Whittaker & Margulis, 1978 |  |  |  | de Blainville, 1834 | Ludwig, 1891 | Grube, 1840 | Pawson, 1970 | Panning, 1949