After Sereno et al., 1998 and Sues, Frey, Martill & Scott, 2002

Alternative phylogeny after Sereno et al., 1998, Sues, Frey, Martill & Scott, 2002, and Smith, Makovicky, Hammer & Currie, 2007

<==o †Spinosauroidea Stromer, 1915 sensu Sereno et al., 1998 (Spinosaurs; purjeselkäteropodit)
   |?- †Poekilopleuron bucklandii Eudes-Deslongchamps, 1838 [taxonomic history]
   `--o †Spinosauridae Stromer, 1915 sensu Sereno et al., 1998 [incl. Baryonychidae Charig & Milner, 1986 and Irritatoridae Martill et al., 1996]
      |?- †Siamosaurus suteethorni Buffetaut & Ingavat, 1986
      |--o †Baryonychinae Charig & Milner, 1986 [Baryonychidae Charig & Milner, 1986]
      |  |-- †Baryonyx walkeri Charig & Milner, 1986
      |  |?- †Cristatusaurus lapparenti Taquet & Russell, 1998 [cogeneric with Baryonyx?]
      |  `?- †Suchomimus tenerensis Sereno, Beck, Dutheil, Gado, Larsson, Lyon, Marcot, Rauhut, Sadleir, Sidor, Varricchio, Wilson & Wilson, 1998 [cogeneric with Baryonyx?]
      `--o †Spinosaurinae Stromer, 1915 sensu Sereno et al., 1998
         |-- †Irritator challengeri Martill, Cruikshank, Frey, Small & Clarke, 1996 [Angaturama limai Kellner & Campos, 1996] [Irritatoridae Martill et al., 1996]
         `--o †Spinosaurus Stromer, 1915
            |-- †S. aegypticus Stromer, 1915
            `?- †S. maroccanus Russell, 1996 [cospecific with S. aegypticus? ]

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