Children (18 direct children, 18 direct and indirect children):
Ptychites lundgreni
Ptychites besnosovi
Ptychites nipponicus
Ptychites latifrons
Ptychites guloensis
Ptychites densistriatus
Ptychites stachei
Ptychites gradinarui
Ptychites evansi
Ptychites oppeli
Ptychites opulentus
Ptychites hamatus
Ptychites miyagiensis
Ptychites wrighti
Ptychites trochleaeformis
Ptychites nordenskjoldi
Ptychites domatus
Ptychites pseudoeuglyphus