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, Protaspidae, Psammolepis, Psammosteiformes, Pteraspidi, Pteraspidiformes, Rimasventeraspis, Strosipherus, Tesseraspidida, Tesseraspidiformes, Tolypelepidiformes, Toombsaspis, Traquairaspidida, Traquairaspidiformes, Corveolepis, Alainaspis, Seretaspis, Strophisterus, Schizosteus, Ennosviaspis, Athenaegis, Yoglinia, Steinaspis, Grumantaspis, Clydonaspis, Pycnaspis, Aspidosteus, Dyreaspis, Obliaspis, Palaeodus, Asketaspis, Poriferaspis, Anatolepsis, Irregulariaspis, Listraspis, Archodus, Pionaspis, Homaspidella, Pilolepsis, Karelosteus, Allocryptaspis, Kiangsuaspis, Gunaspis
Subtaxa: none
Ecology:
Distribution: there are no occurrences of Tolypelepidida in the database