After Maidment, Norman, Barrett & Upchurch, 2008, and Mateus, Maidment & Christiansen, 2009

<==o †Stegosauria Marsh, 1877
   |-- †Gigantspinosaurus sichuanensis Ouyang, 1992
   |-- †Paranthodon africanus (Broom, 1910) Nopcsa, 1929a [Anthodon serrarius Owen, 1876 in partim; Palaeoscincus africanus Broom, 1910; Paranthodon oweni Nopcsa, 1929]
   |-- †Tuojiangosaurus multispinus Dong, Li, Zhou & Zhang, 1977
   |--o †Huayangosauridae Dong, Tang & Zhou, 1982
   |  |-- †Huayangosaurus taibaii Dong, Tang & Zhou, 1982
   |  `-- †Chungkingosaurus jiangbeiensis Dong, Zhou & Zhang, 1983
   `--o †Stegosauridae Marsh, 1880 sensu Carpenter, Clifford & Cloward, 2001
      |-- †Kentrosaurus aethiopicus Hennig, 1915 [Kentrurosaurus aethiopicus Hennig, 1916b (unjust. emend.?); Doryphorosaurus aethiopicus (Hennig) Nopcsa, 1916 (unjust. synon.?)]
      `--+-- †Loricatosaurus priscus Maidment, Norman, Barrett & Upchurch, 2008 [Stegosaurus priscus Nopcsa, 1911a; Lexovisaurus priscus (Nopcsa) Kuhn, 1964]
         `--+--o †Stegosaurus Marsh, 1877c [taxonomic history]
            |  |-- †S. armatus Marsh, 1877c [taxonomic history]
            |  `--+-- †S. mjosi (Carpenter, Miles & Cloward, in Carpenter, 2001) Maidment, Norman, Barrett & Upchurch, 2008 [taxonomic history]
            |     `-- †S. homheni (Dong, 1973a) Maidment, Norman, Barrett & Upchurch, 2008 [taxonomic history]
            `--o †Dacentrurinae Mateus, Maidment & Christiansen, 2009
               |-- †Miragaia longicollum Mateus, Maidment & Christiansen, 2009
               `-- †Dacentrurus armatus (Owen, 1875) Lucas, 1902 [Omosaurus armatus Owen, 1875, Omosaurus hastiger Owen, 1877; Stegosaurus armatus (Owen) Lydekker, 1890; Omosaurus lennieri Nopcsa, 1911; Decentrurosaurus armatus (Owen) Hennig, 1925; Astrodon pusillus Lapparent & Zbyszewski, 1957]

Stegosauria nomina dubia & incertae sedis:

Astrodon pusillus de Lapparent & Zybszewski, 1957 (nomen dubium) [Dinosauria indet.]
    †Chialingosaurus kuani Young, 1959 (nomen dubium)
    †Craterosaurus pottonensis Seeley, 1874 (nomen dubium)
    †Dravidosaurus blanfordi Yadagiri & Ayyasami, 1979 (nomen dubium) [is actually a plesiosaur?!!? (Chatterjee & Rudra, 1996)]
    †Hypsirophus seeleyanus Cope, 1879 (nomen nudum, material lost)
    †Jiangjunosaurus junggarensis Jia, Forster, Xu & Clark, 2007; U.Jur. EAs.
    †Lexovisaurus durobrivensis (Hulke, 1887) Hoffstetter, 1957 [Omosaurus durobrivensis Hulke, 1887; Omosaurus leedsi Seeley, 1901 in partim; Stegosaurus priscus Nopcsa, 1911a] (nomen dubium)
    †Monkonosaurus lawulacus Zhou vide Dong, 1990 (nomen dubium)
    †Omosaurus hastinger Owen, 1877 (nomen dubium)
    †Omosaurus leedsi Seeley, in von Huene, 1901 (nomen dubium)
    †Omosaurus vetustus von Huene, 1910 (nomen dubium)
    †Omosaurus phillipsi Seeley, 1892-93 (nomen dubium)
    †Regnosaurus northamptoni Mantell, 1848 [Hylaeosaurus Owen, 1842 (in partim); Vectisaurus Lydekker, 1888 (in partim); Chondrosteosaurus McIntosh, 1990 (in partim) (nomen dubium)
    †Stegosaurus affinis Marsh, 1881a (nomen nudum)
    †Stegosaurus duplex Marsh, 1887
    †Stegosaurus longispinus Gilmore, 1914a (nomen dubium)
    †Stegosaurus madagascariensis Piveteau, 1926 [Ankylosauria indet.]
    †Stegosaurus sulcatus Marsh, 1887 (nomen dubium)
    †Stegosauria indet. (Averianov & Krasnolutskii, 2009); M.Jur. NCAs.
    †Wuerhosaurus ordosensis Dong, 1993 (nomen dubium); E.Cret. CAs.

Alternative phylogenies of Stegosauria:

After Sereno & Dong, 1992

<==o †Stegosauria
   |-- †Huayangosaurus
   `--+-- †Dacentrurus
      `--o †Stegosauridae
         |-- †Kentrosaurus
         `--+-- †Chialingosaurus
            |-- †Chungkingosaurus
            `--+-- †Tuojiangosaurus
               |-- †Lexovisaurus
               |-- †Paranthodon
               `--+-- †Wuerhosaurus
                  `-- †Stegosaurus

After Carpenter, Miles & Cloward, 2001

<==o †Stegosauria
   |-- †Huayangosaurus
   `--o †Stegosauridae
      `--+-- †Chialingosaurus
         `--+--+-- †Wuerhosaurus
            |  `--+-- †Hesperosaurus
            |     `-- †Dacentrurus
            `--+-- †Tuojiangosaurus
               `--+-- †Stegosaurus
                  `--+-- †Kentrosaurus
                     `-- †Lexovisaurus

After Maidment, Norman, Barrett & Upchurch, 2008

<==o †Stegosauria
   |-- †Gigantspinosaurus
   `--+--o †Huayangosauridae
      |  |-- †Huayangosaurus
      |  `-- †Chungkingosaurus
      `--o †Stegosauridae
         |-- †Dacentrurus
         `--o †Stegosaurinae
            |-- †Kentrosaurus
            `--+-- †Loricatosaurus
               |-- †Paranthodon
               |-- †Tuojiangosaurus
               `-- †Stegosaurus

 

Reference(s):