Children (6 direct children, 2143 direct and indirect children):
Baetidae
(tree size 1237)
Small minnow mayflies
Siphlonuridae
(tree size 63)
Primitive minnow mayflies
Acanthametropodidae
(tree size 5)
Ameletidae
(tree size 70)
Combmouthed minnow mayflies
Heptagenioidea
(tree size 741)
Metretopodidae
(tree size 21)
Cleftfooted minnow mayflies