Artiopoda - Agnostida - Phalacromidae
Parent taxon: Condylopygoidea according to E. B. Naimark and T. V. Pegel 2017
See also Whittington et al. 1997
Sister taxa: Agnostidae, Ammagnostidae, Clavagnostidae, Condylopygidae, Diplagnostidae, Doryagnostidae, Glaberagnostus, Glyptagnostidae, Glyptagnostinae, Leiagnostus, Megagnostus, Metagnostidae, Phalagnostus, Phaldagnostus, Pseudagnostidae, Ptychagnostidae, Spinagnostidae, Valenagnostus
Subtaxa: Lisogoragnostus Munagnostus Toragnostus
Ecology: slow-moving epifaunal detritivore
Distribution:
• Taoyuanian of the Russian Federation (2 collections), South Korea (5)
• Cambrian of Australia (1), China (16), Kazakhstan (27), North Korea (1), the Russian Federation (1)
Total: 53 collections including 56 occurrences