Children (14 direct children, 20 direct and indirect children):
Ptychobranchus occidentalis
Ptychobranchus subtentum
Triangular kidneyshell
Ptychobranchus greenii
Southern kidneyshell
Ptychobranchus jonesi
Ptychobranchus fasciolaris
(tree size 2)
Kidneyshell
Ptychobranchus clintonense
Ptychobranchus clintonensis
Ptychobranchus fasciolare
(tree size 3)
Ptychobranchus flavescens
Ptychobranchus foremanianus
Ptychobranchus greeni
Ptychobranchus phaseolus
(tree size 1)
Ptychobranchus trinacrium
Ptychobranchus trinacrus