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, Glyptagnostus, Leiagnostus, Megagnostus, Metagnostidae, Phalagnostus, Phaldagnostus, Pseudagnostidae, Ptychagnostidae, Spinagnostidae, Valenagnostus
Subtaxa: Lisogoragnostus Munagnostus Phalacroma Toragnostus
Ecology: slow-moving epifaunal detritivore
Distribution:
• Arenig of China (1 collection)
• Tremadoc of China (3)
• Taoyuanian of the Russian Federation (2), South Korea (5)
• Solvan of the Czech Republic (2)
• Amgan of the Czech Republic (1)
• Cambrian of Australia (2), China (16), the Czech Republic (3), France (1), Kazakhstan (27), North Korea (1), the Russian Federation (1), Sweden (1), United States (1: Nevada)
Total: 67 collections including 71 occurrences