Trilobita - Agnostida - Ptychagnostidae

Full reference: G. K. Ergaliev. 1980. Trilobity srednego i verkhnego Kembriya Malogo Karatau [Middle and Upper Cambrian trilobites from Malyy Karatau] 1-211

Belongs to Ptychagnostus according to Ergaliev 1980

Sister taxa: Ptychagnostus (Ptychagnostus), Ptychagnostus acidusus, Ptychagnostus aculeatus, Ptychagnostus aksayensis, Ptychagnostus atavus, Ptychagnostus convexus, Ptychagnostus cuyanus, Ptychagnostus intermedius, Ptychagnostus karatauensis, Ptychagnostus leptus, Ptychagnostus punctuosus, Ptychagnostus seminula, Ptychagnostus sinicus

Ecology: nektonic suspension feeder