Children (11 direct children, 87 direct and indirect children):
Struthiolaria
(tree size 42)
Perissodonta
(tree size 4)
Tylospira
(tree size 5)
Pelicaria
(tree size 19)
Conchothyra
(tree size 3)
Monalaria
(tree size 3)
Struthiolariinae
Struthiolarellinae
Antarctodarwinella
Singletonaria
Struthiolarella