Trilobita - Ptychopariida - Marjumiidae

Parent taxon: Marjumiidae according to P. A. Jell and J. M. Adrain 2003

Sister taxa: Armonia, Holmdalia, Ithyektyphus, Marjumia, Modocia, Nasocephalus, Nericella, Shickshockia, Syspacheilus

Subtaxa: none

Ecology: fast-moving low-level epifaunal carnivore