Children (16 direct children, 16 direct and indirect children):
Megasurcula carpenteriana
Megasurcula tremperiana
Megasurcula remondii
Megasurcula stearnsiana
Megasurcula wynoocheensis
Megasurcula centroamericana
Megasurcula condonana
Megasurcula cryptoconoides
Megasurcula elongata
Megasurcula guayasensis
Megasurcula howei
Megasurcula kurodai
Megasurcula osawanoensis
Megasurcula rara
Megasurcula siogamensis
Megasurcula yokoyamai