Douvillinidae
(tree size 6)
Leptostrophiidae
(tree size 6)
Glyptomenidae
(tree size 12)
Strophodontidae
Amphistrophiidae
(tree size 5)
Christianiidae
(tree size 8)
Strophonellidae
(tree size 1)
Leptaenoideidae
Shaleriidae
Eopholidostrophiidae
(tree size 3)
Foliomenidae
(tree size 2)