Trilobita - Ptychopariida - Olenidae

Alternative combination: Triarthrus convergens

Belongs to Porterfieldia according to R. Ludvigsen and P. A. Tuffnell 1983

Sister taxa: Porterfieldia caecigenus, Porterfieldia fisheri, Porterfieldia jachalensis, Porterfieldia parapunctata, Porterfieldia sinensis, Porterfieldia thor

Ecology: fast-moving low-level epifaunal carnivore