Figure 1 in Erpetosuchus, a crocodile-like basal archosaur from the Late Triassic of Elgin, Scotland

Figure 1. Moulds, casts and models of the skull and mandible of Erpetosuchus granti Newton (1894) (BMNH R3139). (A) Natural rock mould of the left side of the anterior part of the articulated skull and mandible; other sandstone blocks fit on to this one to complete the three-dimensional mould of the entire head; the small black marks in the moulds are cubic crystals of iron oxide mineral. (B−D) Gutta percha cast of the skull, made by E. T. Newton in the 1890s, in dorsal (B), ventral (C), and right lateral (D) views. (E) Plaster model of the skull, made by Newton in the 1890s, in dorsal view. (F) PVC cast of the skull, made by A.D.W. in the 1960s, in lateral view. (G) Gutta percha cast of the left mandible, made by Newton in the 1890s, in lateral view. (H) Plaster model of the left mandible, made by Newton in the 1890s, in lateral view. (I) PVC cast of the left mandible, made by A.D.W. in the 1960s, in lateral view. Scale: all photographs are natural size (×1).