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Prostyliferidae †Superfamily
Acteoninoidea †Family
Acteoninidae †Superfamily
Orthonematoidea †Family
Orthonematidae †Family
Goniasmatidae †Superfamily Palaeostyloidea...
- Cerithimorpha/Cerithioidea, Turritellimorpha/Turritelloidea, Murchisonimorpha/
Orthonematoidea, Campanilimorpha/Campaniloidea and Ampullinoidea, Vermetimorpha/Vermetoidea...