Fig. 6From: A new sphenodontian (Diapsida: Lepidosauria) from the Upper Triassic (Norian) of Germany and its implications for the mode of sphenodontian evolutionFrontal in A dorsal; B ventral; C left lateral; and D right lateral view. Abbreviations: Ant. Proc, anterior process; N. fct, nasal facet; Pf. Fct, postfrontal facet; Post. lat. Proc, posterolateral process; Prf. fct, prefrontal facetBack to article page