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, Irregulariaspis, Homaspidella, Corveolepis, Steinaspis, Schizosteus, Kiangsuaspis, Pycnaspis, Grumantaspis, Seretaspis, Gunaspis, Archodus, Karelosteus, Obliaspis, Listraspis, Pilolepsis, Ennosviaspis, Allocryptaspis, Poriferaspis, Yoglinia, Strophisterus, Dyreaspis, Clydonaspis, Anatolepsis
Subtaxa: none
Ecology: planktonic suspension feeder
Distribution: there are no occurrences of Tolypelepidida in the database