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