Class Reptilia Linnaeus, 1758 - reptiles Subclass Archosauria Cope, 1869 see Division Archosauria Cope, 1869 Order †Saurischia Seeley, 1887 see Clade Saurischia Seeley 1888 [Gauthier, Langer, Novas, Bittencourt & Ezcurra 2020] Suborder †Sauropoda Marsh, 1878 see Clade Sauropoda Marsh 1878 [Salgado et al. 1997] Family †Euhelopodidae Romer, 1956