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If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.
|R. R. Schoch 2011||Autapomorphies: (1) small orbits combined with broad interorbital distance; (2) preorbital region slender, with nasals and lacrimals narrower than frontals, (3) dermal ornament consists of small, similarly sized polygons, but no elongated ridges. (Schoch 2008a). Homoplasies: (a) Anterior palatal fenestra paired (shared with many trematosaurids, metoposaurids, and some capitosauroids); (b) prenarial portion of premaxilla slightly elongated (shared with Benthosuchus, but not as extreme); (c) supraorbital sulcus traverses lacrimal (shared with Benthosuchus, all trematosaurids, Yuanansuchus, Mastodonsaurus, Eocyclotosaurus, Quasicyclotosaurus); (d) posterior quadrate boss (shared with many primitive capitosaurs: Wetlugasaurus, Watsonisuchus, Parotosuchus). (e.g., Schoch 2008a). Plesiomorphies: (i) tabular horns directed posteriorly, constricting otic notch only faintly; (ii) postorbital with large lateral projection, widely separated from prefrontal; (iii) prefrontal and postfrontal apparently sutured (a plesiomorphic state among capitosaurs, shared only with Wetlugasaurus).|