Artiopoda - Agnostida - Clavagnostidae
Parent taxon: Condylopygoidea according to E. B. Naimark and T. V. Pegel 2017
See also Hong et al. 2003 and Whittington et al. 1997
Sister taxa: Agnostidae, Ammagnostidae, Condylopygidae, Diplagnostidae, Doryagnostidae, Glaberagnostus, Glyptagnostus, Leiagnostus, Megagnostus, Metagnostidae, Phalacromidae, Phalagnostus, Phaldagnostus, Pseudagnostidae, Ptychagnostidae, Spinagnostidae, Valenagnostus
Subtaxa: Aspidagnostinae Clavagnostinae Triadaspis Utagnostinae Utagnostus
Type: Clavagnostus
Ecology: slow-moving epifaunal detritivore
Distribution:
• Cambrian of Antarctica (1 collection), Argentina (1), Australia (2), Canada (4: Newfoundland and Labrador, Yukon), China (48), India (3), Kazakhstan (29), North Korea (1), the Russian Federation (3), South Korea (1), United States (8: Alabama, Nevada, Utah)
Total: 101 collections including 135 occurrences