Family Retropinnidae (ray-finned fish)
Actinopteri - Osmeriformes - Retropinnidae
Parent taxon: Osmeriformes according to R. Betancur et al. 2013
See also Jordan 1963 and Nelson et al. 2016
Sister taxa: Allosmerus, Carpathichthys, Enoplophthalmus, Maulisia, Nybelinoides, Opisthoproctus, Osmeridae, Plecoglossidae, Prototroctidae, Salangidae
Subtaxa: none
Ecology: nektonic carnivore
Distribution: found only at McGraths Flat (Miocene of Australia)