Figure 4 in Cephalic salt gland evolution in Mesozoic pelagic crocodylomorphs

Figure 4. Internal rostral anatomy of basal metriorhynchoids Pelagosaurus typus [NHMUK PV OR 32599 (A-E)] and Eoneustes gaudryi [NHMUK PV R 3263 (F-H)]. A-C, Pelagosaurus in dorsal (A), anterodorsal (B) and left lateral views (C) with the skull rendered transparent. D, E, transverse CT slices of nasal cavity olfactory region showing dorsal expansions where salt glands are inferred, the dorsolateral groove separating the inferred positions of salt glands and the nasal capsule (D) and the nasal ridge creating a V-shaped depression of the olfactory region ventral to the nasals (E). F-G, Eoneustes in dorsal (F) and left lateral views (G) with the skull rendered transparent. H, transverse CT slice of nasal cavity olfactory region showing the left salt duct, larger dorsolateral expansions where salt glands are inferred and ridge on the ventral surface of the nasals. Internal reconstruction colours: nasal cavity, yellow; nasopharyngeal ducts, pale yellow; antorbital fenestra, green; preobrital fenestra, light green. Scale bars equal 50 mm (A-C, F, G) and 10 mm (D, E, H).