<==o Anapsida [Proganosauria]
   |--o †Mesosauridae
   |  |-- †Brazilosaurus sanpauloensis
   |  |-- †Stereosternum tumidum Cope, 1886
   |  `--o †Mesosaurus [Ditrichosaurus, Noteosaurus africanus, Notosaurus]
   |     |-- †M. tenuidens Gervais, 1865
   |     `-- †M. brasiliensis [jr. synon. to M. tenuidens??]
   `--o Parareptilia
      |--o †Millerettidae [Millerosauria, Millerosauroidea]
      |  |-- †Broomia
      |  |?- †Heleophilus
      |  |-- †Milleretta rubidgei [Millerina]
      |  |-- †Milleretoides
      |  |-- †Millerettops
      |  |-- †Milleropsis
      |  |-- †Millerosaurus nuffieldi
      |  `-- †Nanomilleretta
      `--+-- †Eunotosaurus africanus Seeley, 1892 sensu Modesto, 2000
         |--o †Bolosauridae Cope, 1878 sensu Berman et al., 2000
         |  |?- †Bolosauridae genera et species indet. [China]
         |  |--o †Bolosaurus Cope, 1878; L. Perm. NA.
         |  |  |?- †B. major
         |  |  |?- †B. rapidens
         |  |  |-- †B. striatus Cope, 1878
         |  |  `-- †B. grandis Reisz, Barkas & Scott, 2002
         |  |-- †Eudibamus cursoris Berman et al., 2000, L. Perm. CEu.
         |  `--o †Belebay U. Perm. EEu.
         |     |-- †B. vegrandis
         |     `-- †B. maximi
         `--o Procolophonomorpha Romer, 1964 sensu Lee, 1995 [Ankyramorpha deBraga & Reitz, 1996]
            |--o †Nyctiphruretia [paraphyletic?]
            |  |--o †Nyctiphruretus [Nyctiphruretidae]
            |  |  |?- †N. acrudens
            |  |  `-- †N. ineptus
            |  `--o †Nycteroleteridae
            |     |-- †Nycteroleter
            |     `-- †Macroleter poezicus
            `--o Procolophoniformes [Procolophonia]
               |-- †Procolophonoidea
               `-- Pareiasauriformes [Hallucicrania]

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