Polymixia Lowe 1836 (beardfish)
Parent taxon: Polymixiiformes according to J. J. Sepkoski 2002
Sister taxa: Aipichthyoides, Aipichthys, Berycopsia, Berycopsis, Dalmatichthys, Homonotichthys, Omosoma, Paraipichthys, Polymixiidae, Pycnosterinx
Subtaxa: none
Ecology: nektonic omnivore