Fig. 4From: New specimen of Psephoderma alpinum (Sauropterygia, Placodontia) from the Late Triassic of Schesaplana Mountain, Graubünden, SwitzerlandCoronal slices through PIMUZ A/III 1491 showing the left (a) and right (b) prootic foramina and surrounding elements. Abbreviations as in Figs. 2 and 3 plus, D dorsal, pbs parabasisphenoid, V ventralBack to article page