†subfamily Pharostomatinae Hupe 1953 (trilobite)
Artiopoda - Phacopida - Calymenidae
Parent taxon: Calymenidae according to A. W. Owen and D. L. Bruton 1980
See also Siveter 1977
Sister taxa: Calymenesum, Calymeninae, Carmoninae, Flexicalymeninae, Gravicalymene, Linguocalymene, Liocalymene, Neseuretus, Nipponocalymene, Onnicalymene, Papillicalymene, Platycalymene, Pradoella, Protocalymene, Reacalymene, Reedocalymene, Reedocalymeninae, Salterocoryphe, Spathacalymene, Tapinocalymene
Subtaxa: Xuanenia
Type: Pharostoma
Ecology: nektobenthic carnivore
Distribution:
• Ordovician of China (3 collections)
Total: 3 collections each including a single occurrence