Pectinina
(tree size 1440)
Anomioidea
(tree size 205)
Dimyoidea
(tree size 57)
Plicatuloidea
(tree size 67)
Pterinopectinidae
(tree size 5)
Natalissimidae
(tree size 2)
Claraiidae
(tree size 2)
Annuliconchidae
(tree size 2)
Prospondylidae
(tree size 2)
Buchioidea
(tree size 13)
Entoliidina
(tree size 2)
Eurydesmatoidea
(tree size 2)
Chaenocardioidea
(tree size 13)
Entolioidea
(tree size 5)
Halobioidea
(tree size 9)