Fig. 5. Snorkelling sauropods. Left: the first-ever life restoration of a sauropod, Knight's drawing of Amphicoelias, published by Ballou (1897), modified from Osborn & Mook (1921, fig. 127). Right: a similar scene with 'Helopus' (now Euhelopus), modified from Wiman (1929, fig. 5).