After Sereno & Arcucci, 1994a, 1994b, Bennett, 1996, Ezcurra, 2006, Irmis et al., 2007a, Nesbitt, Irmis, Parker, Smith, Turner & Rowe, 2009, and Benton & Walker, 2011
<==o Ornithodira Gauthier, 1986 |--o †Pterosauromorpha | |?- †Archosauria genera et species indet. [Atanassov, 2001] | |-- †Scleromochlus taylori Woodward, 1907 [possibly a sphenosuchian crocodylomorph] | `-- †Pterosauria Kaup, 1834 (pterosaurs; siipisaurit, lentoliskot) `--o Dinosauromorpha Benton, 1985 sensu Sereno, 1991 [Dinosauria sensu lato] |--o †Lagerpetidae Arcucci, 1986 sensu Nesbitt, Irmis, Parker, Smith, Turner & Rowe, 2009 | |-- †Lagerpeton canarensis Romer, 1971 | `--o †Dromomeron Irmis et al., 2007 | |-- †D. romeri Irmis et al., 2007 | `-- †D. gregorii Nesbitt, Irmis, Parker, Smith, Turner & Rowe, 2009 `--o Dinosauriformes Novas, 1992 |?- †Teyuwasu barbarenai Kischlat, 1999 |?- †Luanpingosaurus jingshanensis Cheng, vide Chen, 1996 [nomen nudum] |-- †Marasuchus lilloensis (Romer, 1972b) Sereno & Arcucci, 1994 [Lagosuchus talampayensis Romer, 1971; Lagosuchus lilloensis Romer, 1972b] `--+-- †Saltopus elginensis Huene, 1910 `--+--o †Silesauridae Nesbitt, Sidor, Irmis, Angielczyk, Smith & Tsuji, 2010 | |?- †Pseudolagosuchus major Arcucci, 1987; M.Trias. WSAm. | |?- †Lewisuchus admixtus Romer, 1972; M.Trias. WSAm. [has been treated as a basal suchian archosaur (Parrish, 1993).] | `--+-- †Asilisaurus kongwe Nesbitt, Sidor, Irmis, Angielczyk, Smith & Tsuji, 2010; M.Trias. EAf. | `--+-- †Eucoelophysis baldwini Sullivan & Lucas, 1999 sensu Ezcurra, 2006; ; L.Trias. SWNAm. [nomen dubium, original type of Coelophysis bauri Cope, 1889c; treated as Coelophysoid by Sullivan & Lucas (1999)] | `--+-- †Silesaurus opolensis Dzik, 2003; L.Trias. CEu. | `-- †Sacisaurus agudoensis Ferigolo & Langer, 2006; L.Trias. WSAm. `--+-- †Herrarasauria sensu Gauthier, 1986 [Herreravia Paul, 1988] (herrerasaurit, herreranlinnut; herrerasaurs) `-- Dinosauria Owen, 1842 [incl. Aves Linnaeus, 1758] (dinosaurs, incl. birds; dinosaurit ja linnut, hirmuliskot)
Alternative phylogenetic hypothesis of ornithodirans:
After Gauthier, 1986<==o Ornithodira |-- †Pterosauria `--o Dinosauromorpha Benton, 1985 |-- †Herrarasauridae `--o Dinosauria |== †Ornithischia `--o Saurischia |-- †Sauropodomorpha `-- Theropoda |
After Brinkman & Sues, 1987<==o Ornithodira |-- †Pterosauria `--o Dinosauromorpha Benton, 1985 |-- †Staurikosaurus `--+-- †Herrerasaurus `--o Dinosauria |== †Ornithischia `--o Saurischia |-- †Sauropodomorpha `-- Theropoda |
After Novas, 1989<==o Ornithodira |-- †Pterosauria `--o Dinosauromorpha Benton, 1985 |-- †Herrarasauridae |--o †Ornithischia | |-- †Pisanosaurus | `== “Other ornithischians” `--o Saurischia |-- †Sauropodomorpha `-- Theropoda |
After Sereno, Forster, Rogers & Monetta, 1993<==o Ornithodira |-- †Pterosauria `--o Dinosauromorpha Benton, 1985 `--o Dinosauria |--o †Ornithischia | |-- †Pisanosaurus | `== “Other ornithischians” `--o Saurischia |-- †Sauropodomorpha `--o Theropoda |-- †Eoraptor `--+-- †Herrarasauridae `-- Neotheropoda |
After Novas, 1997a<==o Ornithodira |-- †Pterosauria `--o Dinosauromorpha Benton, 1985 `--o Dinosauria |-- †“Ornithischians” `--o Saurischia |-- †Sauropodomorpha `--o Theropoda |-- †Eoraptor `--+-- Neotheropoda `--o †Herrarasauridae |-- †Staurikosaurus `--+-- †Chindesaurus `-- †Herrerasaurus |
After Sereno, 1999<==o Ornithodira |-- †Pterosauria `--o Dinosauromorpha Benton, 1985 `--o Dinosauria |--o †Ornithischia | |-- †Pisanosaurus | `== “Other ornithischians” `--o Saurischia |-- †Sauropodomorpha `--o Theropoda |-- †Eoraptor `--+-- Neotheropoda `--o †Herrarasauridae |-- †Herrerasaurus `--+-- †Chindesaurus `-- †Staurikosaurus |
After Fraser, Padian, Walkden & Davis, 2002<==o Ornithodira |-- †Pterosauria `--o Dinosauromorpha Benton, 1985 |-- †Herrarasauridae `--+-- †Agnostiphitys `-- Dinosauria |
After Langer, 2004<==o Ornithodira |-- †Pterosauria `--o Dinosauromorpha Benton, 1985 `--o Dinosauria |--o †Ornithischia | |-- †Pisanosaurus | `== “Other ornithischians” `--o Saurischia |--o †Herrarasauridae | |-- †Herrerasaurus | `-- †Staurikosaurus `--+--+-- †Saturnalia | `-- †Sauropodomorpha `--+-- †Eoraptor `-- Neotheropoda |
After Ezcurra, 2006<==o Ornithodira |-- †Pterosauria `--o Dinosauromorpha Benton, 1985 `--o Dinosauriformes |-- †Marasuchus `--+-- †Pseudolagosuchus `--+-- †Silesaurus `--+-- †Eucoelophysis `--o Dinosauria |--o †Ornithischia | |-- †Pisanosaurus | `-- “Other ornithischians” `--o Saurischia |--o †Herrarasauridae | |-- †Herrerasaurus | `-- †Staurikosaurus `--o †Eusaurischia |--+-- †Saturnalia | `-- †Sauropodomorpha `--+-- †Eoraptor `-- Neotheropoda |
After Irmis et al., 2007a<==o Ornithodira |-- †Pterosauria `--o Dinosauromorpha Benton, 1985 |--+-- †Lagerpeton | `-- †Dromomeron `--o Dinosauriformes |-- †Marasuchus `--+--o †Silesauridae | |-- †Pseudolagosuchus | `--+-- †Silesaurus | `-- †Eucoelophysis `--o Dinosauria |--o †Ornithischia | |-- †Pisanosaurus | `== †“Other ornithischians” `--o Saurischia |--o †Herrarasauridae | |-- †Herrerasaurus | `-- †Chindesaurus `--o †Eusaurischia |-- Neotheropoda `--+-- †Saturnalia `-- †Sauropodomorpha |
After Upchurch et al., 2007<==o Ornithodira |-- †Pterosauria `--o Dinosauromorpha Benton, 1985 `--o Dinosauria |--o †Ornithischia | |-- †Pisanosaurus | `== †“Other ornithischians” `--o Saurischia |-- †Eoraptor `--+-- †Herrerasaurus `--o †Eusaurischia |--o Theropoda | |-- †Guaibasaurus | `-- Neotheropoda `--+-- †Saturnalia `-- †Sauropodomorpha |
After Yates, 2007a<==o Ornithodira |-- †Pterosauria `--o Dinosauromorpha Benton, 1985 `--o Dinosauria |== †“Ornithischians” `--o Saurischia |--o †Herrarasauridae | |-- †Herrerasaurus | `-- †Staurikosaurus `--+-- †Eoraptor `--o †Eusaurischia |--+-- †Saturnalia | `-- †Sauropodomorpha `--o Theropoda |-- †Agnostiphitys `--+-- †Guaibasaurus `--+-- †Chindesaurus `-- Neotheropoda |
After Brusatte et al., 2009<==o Ornithodira |-- †Pterosauria `--o Dinosauromorpha Benton, 1985 `--o Dinosauriformes |-- †Marasuchus `--+-- †Pseudolagosuchus `--+--o †Silesauridae | |-- †Lewisuchus | `--+-- †Silesaurus | |-- †Sacisaurus | `-- †Eucoelophysis `--o Dinosauria |-- †Ornithischia `-- Saurischia |
After Martinez et al., 2011<==o Dinosauromorpha |-- †Lagerpetidae `--+-- †Marasuchus `--+-- †Silesauridae `--o Dinosauria |-- †Ornithischia `--o Saurischia |--o †Sauropodomorpha | |-- †Sauropodiformes | `--+-- †Eoraptor | |-- †Panphagia | `-- †Saturnalia `--o Theropoda |-- †Herrarasauria `--+-- †Eudromaeus `--+--o †Coelophysoidea | |-- †Tawa | `== “other coelophysoids” `--+-- †Neoceratosauria `-- Tetanurae |
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