Clade Petrosaviaceae Hutch. 1934
Liliopsida - Hydrocharitaceae - Alismatidae
PaleoDB taxon number: 214068
Parent taxon: Hydrocharitaceae according to A. Benzecry and S. D. Brack-Hanes 2008
Sister taxa: Enhalus, Eotrapa, Halophila, Halophiloideae, Hydrocharis, Hydrocharites, Stratiotes, Stratiotites, Thalassia, Thalassioideae, Thalassites, Vallisnerioideae
Subtaxa: none