†family Platysiagidae Brough 1939 (ray-finned fish)
Osteichthyes - Perleidiformes - Platysiagidae
Parent taxon: Perleidiformes according to T. Bürgin 1992
See also Gardiner 1960 and Nelson et al. 2016
Sister taxa: Boreichthys, Cephaloxenidae, Chrotichthys, Cleiothrolepididae, Cleithrolepidae, Colobodontidae, Crenolepis, Daninia, Dollopterus, Fuyuanperleididae, Gabanellidae, Habroichthyidae, Manlietta, Perleididae, Polzbergiidae, Saurichthyes, Tripelta, Zeuchthiscus
Subtaxa: Helmolepis
Ecology: planktonic suspension feeder
Distribution:
• Triassic of Canada (4: British Columbia collections), Greenland (5), Madagascar (1)
Total: 10 collections each including a single occurrence