Children (26 direct children, 369 direct and indirect children):
Prionorhynchiidae
(tree size 2)
Trigonirhynchiidae
(tree size 14)
Pugnacidae
(tree size 2)
Cyclothyrididae
(tree size 6)
Norelloidea
(tree size 45)
Dimerelloidea
(tree size 25)
Pugnacoidea
(tree size 44)
Hemithiridoidea
(tree size 17)
Rhynchonellidae
(tree size 62)
Wellerelloidea
(tree size 25)
Tetrarhynchiidae
(tree size 15)
Camarotoechioidea
(tree size 16)
Uncinuloidea
(tree size 26)
Apodosiidae
Cyclothyridae
(tree size 1)
Praecyclothyrididae
Cardinirhynchiidae
Rhynchotrematoidea
(tree size 15)
Stenoscismatoidea
(tree size 8)
Rhynchotetradoidea
(tree size 5)
Rhynchoporoidea
(tree size 5)
Ancistrorhynchoidea
(tree size 6)
Lambdarinoidea
(tree size 4)
Basilioloidea
Antronaria
Rhynchonelloidea