Children (25 direct children, 25 direct and indirect children):
Obesotoma tenuilirata
Obesotoma simplex
Obesotoma woodiana
Obesotoma schantarica
Obesotoma robusta
Obesotoma japonica
Obesotoma artica
Obesotoma lawrenciana
Obesotoma miona
Obesotoma gigantea
Obesotoma hokkaidoensis
Obesotoma gigas
Obesotoma iessoensis
Obesotoma laevigata
Obesotoma okutanii
Obesotoma oyashio
Obesotoma pulcherrima
Obesotoma sachalinensis
Obesotoma solida
Obesotoma starobogatovi
Obesotoma tumida
Obesotoma uchidai
Obesotoma tomiyaensis
Obesotoma cymata
Obesotoma hanazakiensis