Pteraspidomorpha - Drepanaspidae
Parent taxon: Heterostraci according to D. S. Jordan 1963
Sister taxa: Amphiaspidiformes, Aporemaspis, Ariaspididae, Aserotaspis, Cardipeltida, Cardipeltidae, Cardipeltiformes, Ceraspidae, Corvaspidida, Corvaspidiformes, Cyathaspida, Cyathaspidiformes, Guerichosteidae, Lepidaspidida, Lepidaspidiformes, Munchoaspis, Olbiaspidida, Palaeaspidi, Psammosteiformes, Pteraspidi, Pteraspidiformes, Rimasventeraspis, Strosipherus, Tesseraspidida, Tesseraspidiformes, Tolypelepidida, Tolypelepidiformes, Toombsaspis, Traquairaspidida, Traquairaspidiformes, Grumantaspis, Obliaspis, Archodus, Strophisterus, Steinaspis, Listraspis, Pilolepsis, Irregulariaspis, Corveolepis, Ennosviaspis, Schizosteus, Anatolepsis, Dyreaspis, Homaspidella, Poriferaspis, Kiangsuaspis, Gunaspis, Pycnaspis, Clydonaspis, Yoglinia, Seretaspis, Karelosteus, Allocryptaspis
Subtaxa: none
Ecology: planktonic suspension feeder
Distribution: there are no occurrences of Drepanaspidae in the database