†family Massalongiidae (ray-finned fish)
Osteichthyes - Acanthuriformes - Massalongiidae
Parent taxon: Acanthuriformes according to J. S. Nelson et al. 2016
See also Bannikov 2014
Sister taxa: Acanthonemidae, Acanthuridae, Acanthuroidei, Lutjanidae, Luvaridae, Sciaenoidei, Zanclidae
Subtaxa: Massalongius
Ecology:
Distribution: found only at Monte Bolca, Pesciara (general) (Eocene of Italy)