Pteraspidomorpha - Tolypelepidida
Parent taxon: Heterostraci according to J. S. Nelson et al. 2016
See also Long 2011
Sister taxa: Amphiaspidiformes, Aporemaspis, Ariaspididae, Aserotaspis, Cardipeltida, Cardipeltidae, Cardipeltiformes, Ceraspidae, Corvaspidida, Corvaspidiformes, Cyathaspida, Cyathaspidiformes, Drepanaspidae, Guerichosteidae, Lepidaspidida, Lepidaspidiformes, Munchoaspis, Olbiaspidida, Palaeaspidi, Psammolepis, Psammosteiformes, Pteraspidi, Pteraspidiformes, Rimasventeraspis, Strosipherus, Tesseraspidida, Tesseraspidiformes, Tolypelepidiformes, Toombsaspis, Traquairaspidida, Traquairaspidiformes, Karelosteus, Asketaspis, Pycnaspis, Allocryptaspis, Strophisterus, Clydonaspis, Dyreaspis, Ennosviaspis, Poriferaspis, Pionaspis, Schizosteus, Anatolepsis, Seretaspis, Grumantaspis, Archodus, Pilolepsis, Listraspis, Kiangsuaspis, Corveolepis, Irregulariaspis, Alainaspis, Homaspidella, Yoglinia, Gunaspis, Steinaspis, Athenaegis, Obliaspis
Subtaxa: none
Ecology:
Distribution: there are no occurrences of Tolypelepidida in the database