Full reference: P. Tarrant. 1991. The ostracoderm Phialaspis from the Lower Devonian of the Welsh Borderland and South Wales. Palaeontology 34:399-438
Parent taxon: Heterostraci according to P. Tarrant 1991
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, Tolypelepidida, Tolypelepidiformes, Traquairaspidida, Traquairaspidiformes, Dyreaspis, Clydonaspis, Ennosviaspis, Gunaspis, Schizosteus, Corveolepis, Allocryptaspis, Seretaspis, Obliaspis, Steinaspis, Pycnaspis, Yoglinia, Grumantaspis, Anatolepsis, Karelosteus, Listraspis, Kiangsuaspis, Pilolepsis, Archodus, Strophisterus, Poriferaspis, Irregulariaspis, Homaspidella
Subtaxa: Toombsaspis pococki Toombsaspis sabrinae
Ecology: planktonic suspension feeder
Distribution:
• Silurian of the United Kingdom (2 collections)
Total: 2 collections each including a single occurrence
Specimen images are retrieved through the ePANDDA API.
Click image to enlarge. Click to access iDigBio record.