Eukaryota | Animalia | Cnidaria | Hydrozoa | Trachylinae | Trachymedusae | Rhopalonematidae | Pectis
COL:CS5HF | COL:N | COL:CN2 | COL:B8V3X | COL:7ZFKF | COL:7NFGK | COL:7NKVT | COL:7PQKZ
(Chatton, 1925) Whittaker & Margulis, 1978 |  |  | Owen, 1843 | Haeckel, 1879 | Haeckel, 1866 | Russell, 1953 | Haeckel, 1879