Order Placoganoidei
Parent taxon: Ganoidei according to J. Leidy 1873
See also Owen 1859
Sister taxa: Cycloganoidei, Glaniostomi, Lepidoganoidei, Lepidosteidae, Pycnodonti, Rhomboganoidei, Selachostomi
Subtaxa: none
Distribution: there are no occurrences of Placoganoidei in the database