After Jeffery, 2001-2003 [“The GastroClass”]

<==o Eogastropoda Ponder & Lindberg, 1996 [Prosobranchia Milne Edwards, 1848 p.p.; Azygobranchia Spengel, 1881 p.p.]
   |?- †Sinuopeidae Wenz, 1938 [removed here from Pleurotomarioidea fide Wagner, 2002]
   |--o Neomphalida [incl. Peltospiroidea McLean, 1989 (“Hot-Vent Taxa” Ponder & Lindberg, 1997)]
   |  |?-o ?Peltospiroidea McLean, 1989 [also placed in the Neritopsina e.g. Tracey et al., 1993]
   |  |  `-- Peltospiridae McLean, 1989
   |  `--o Neomphaloidea McLean, 1981
   |     `-- Neomphalidae McLean, 1981 [Cyathermidae McLean, 1990; Melanodrymiidae (latter also placed in the Peltospiridae)]
   `--o Docoglossa Troschel, 1866 [Patellogastropoda Lindberg, 1986; Onychoglossa; Cyclobranchia Cuvier, 1817; Patelliformes Ihering, 1876]
      |?- Metoptomatidae Wenz, 1938
      |--o Lepetopsina
      |  `--o Lepetopsoidea McLean, 1990
      |     |-- Damilinidae Horný, 1961 [placement fide Peel & Horný, 1999, ex Patelloidea; Ord. - Perm.]
      |     |-- Lepetopsidae McLean, 1990
      |     `-- Neolepetopsidae McLean, 1990
      |--o Patellina von Ihering, 1876 [Patelloidei Ihering, 1876; Patelliformes auctt.]
      |  `--o Patelloidea Rafinesque, 1815
      |     |-- Patellidae Rafinesque, 1815
      |     `?- “scutellastriids” [informal grouping]
      `--o Nacellina Thiele, 1929
         |--o Nacelloidea Thiele, 1929
         |  `-- Nacellidae Thiele, 1929
         `--o Acmaeoidea Forbes, 1850 [Lepetoidea Dall, 1869; Lottioidea Gray, 1840; Tecturoidea Gray, 1847]
            |-- Acmaeidae Forbes, 1850 (& Carpenter, 1857) [Pectinodontidae Thiele, 1893]
            |-- Lepetidae Dall, 1869 [Propilidiidae Golikov & Starobogatov, 1975]
            `-- Lottiidae Gray, 1840 (& Habe, 1944) [Tecturidae Gray, 1847]