Figure 3: Strict consensus tree showing the relationships of Sauropterygia within Diapsida combined with their geographic distribution.
From: European origin of placodont marine reptiles and the evolution of crushing dentition in Placodontia
All scores equal 100, apart from those shown (tree description shown in Methods; Supplementary Fig. S5). (a) Placodontiformes (new taxon). (b) Placodontia. (c) Cyamodontoidea. (d) Eosauropterygia. (e) Pistosauroidea. (f) Nothosauroidea. (g) Pachypleurosauria. Taxa are indicated by symbols on a simplified map of the Middle Triassic (adapted from Blakey57 and McKie and Williams58) with the eastern Tethyan province (red), western Tethyan province (dark blue) and eastern Panthalassic province (orange) highlighted.
