Order Petrosaviales Takhtajan 1997
Parent taxon: Monocots according to The Angiosperm Phylogeny Group 2016
Sister taxa: Acorales, Aglaoreidia, Araceae, Arecaceae, Arecales, Asparagales, Commelinales, Commelinids, Dioscoreales, Liliaceae, Liliales, Pandanales, Poales, Zingiberales
Subtaxa: Petrosaviaceae
Ecology: "photoautotroph"
Distribution: there are no occurrences of Petrosaviales in the database