Pteraspidomorpha - Lepidaspidiformes
Parent taxon: Heterostraci according to R. van der Laan 2019
Sister taxa: Amphiaspidiformes, Aporemaspis, Ariaspididae, Aserotaspis, Cardipeltida, Cardipeltidae, Cardipeltiformes, Ceraspidae, Corvaspidida, Corvaspidiformes, Cyathaspida, Cyathaspidiformes, Drepanaspidae, Guerichosteidae, Lepidaspidida, Munchoaspis, Olbiaspidida, Palaeaspidi, Psammolepis, Psammosteiformes, Pteraspidi, Pteraspidiformes, Rimasventeraspis, Strosipherus, Tesseraspidida, Tesseraspidiformes, Tolypelepidida, Tolypelepidiformes, Toombsaspis, Traquairaspidida, Traquairaspidiformes, Pionaspis, Steinaspis, Grumantaspis, Dyreaspis, Allocryptaspis, Homaspidella, Pilolepsis, Karelosteus, Archodus, Seretaspis, Yoglinia, Schizosteus, Irregulariaspis, Corveolepis, Obliaspis, Kiangsuaspis, Clydonaspis, Strophisterus, Gunaspis, Poriferaspis, Pycnaspis, Listraspis, Ennosviaspis, Alainaspis, Anatolepsis, Asketaspis, Athenaegis
Subtaxa: Lepidaspididae
Ecology:
Distribution:
• Devonian of Canada (3: Northwest Territories collections), Norway (1), the Russian Federation (1)
Total: 5 collections each including a single occurrence