Concise hierarchy

(Kingdom) Animalia - (Phylum) Chordata - (Class) Reptilia - (Order) Mesosauria

Current position

†Mesosauria (Order) Seeley, 1892

Ref: R.L. Carroll, 1988: 615.

Alternative positions

Amniota (Clade) Haeckel, 1866 [Gauthier, Kluge & Rowe 1988]	Ref: R.V. Hill, 2005: fig. 5. [inferred rank]
Anapsida (Subclass) Osborn, 1903	Ref: M.J. Benton, 2005: 395.
†Parareptilia (Clade) Olson 1947 [deBraga & Reisz 1996]	Ref: S.P. Modesto et al., 2015: fig. 2c. [inferred rank]
†Parareptilia (Subclass) Olson, 1947	Ref: M.J. Benton, 2015: 438.
†Proganosauria (Order) Baur, 1887	Ref: O. Kuhn, 1969: 2.

Historical positions

†Parareptilia (Clade) Olson 1947 [deBraga & Reisz 1996]	Ref: S.P. Modesto et al., 2015: figs. 2c, 3.
Anapsida (Subclass) Osborn, 1903	Ref: M.J. Benton, 2005: 395, box 5.1.
Amniota (Clade) Haeckel, 1866 [Gauthier, Kluge & Rowe 1988]	Ref: R.V. Hill, 2005: fig. 5.
†Mesosauria (Order) Seeley, 1892	Ref: P. Uetz, [1995-]1996: 30 Dec 1996.
†Mesosauria (Order) Seeley, 1892	Ref: R.L. Carroll, 1988: 615.
†Mesosauria (Order) Seeley, 1892	Ref: B. Grzimek et al., 1973 (1971): 591.
†Proganosauria (Order) Baur, 1887	Ref: O. Kuhn, 1969: 2.

Number of Subtaxa

2024	Available in Systema Naturae 2000	†2g;2s
1989-present	Systema Naturae 2000: 30 Aug 2019	[; †2g]
1988	R.L. Carroll: 615	[; †3g]