Concise hierarchy
	(Kingdom) Animalia - (Phylum) Chordata - (Class) Reptilia
Phylogeny
	Defined by the most recent common ancestor (and all its descendants) of
	
		
			| †Apsisaurus (Genus) Laurin, 1991 |  | Ref: M. Laurin, 1991: 84. | 
		
			| Archosauria (Clade) Cope 1869 [Gauthier & Padian 1985], nom. cl. inval. |  | Ref: M. Laurin, 1991: 84 ("archosaurs"). | 
		
			| †Coelurosauravus (Genus) Piveteau, 1926 |  | Ref: M. Laurin, 1991: 84. | 
		
			| Lepidosauria (Clade) Haeckel 1866 [Gauthier, Estes & de Queiroz 1988], nom. cl. inval. |  | Ref: M. Laurin, 1991: 84 ("lepidosaurs"). | 
		
			| †Younginiformes (Clade) Romer 1933 [Laurin 1991] |  | Ref: M. Laurin, 1991: 84 ("younginiforms"). | 
	
	Original position
	
	Original entries
	
	Current position
	
		Historical positions
		
				Number of Subtaxa