†family Permosynidae Tillyard 1924 (beetle)
Full reference: R. J. Tillyard. 1924. Upper Permian Coleoptera and a new order from the Belmont Beds, New South Wales. Proceedings of the Linnean Society of New South Wales 49:429-435
Parent taxon: Permosynoidea according to P. Bouchard et al. 2011
Sister taxon: Ademosynidae
Subtaxa: Ademosyne, Delpuentesyne, Diarcuipenna, Hydrobiites, Palademosyne, Permocrossos, Permosyne, Platycrossos, Pseudorhynchophora, Tychtocoleus, Umkomaasia
Ecology: