Figure 2.

Range of possible habitual head angles in the basal sauropodomorph (a)
<i>Massospondylus</i>, and the sauropods (b) <i>Camarasaurus</i> and
(c) <i>Diplodocus</i>. Heads shown with HSSC oriented horizontally,
and tilted 30º upwards and 20º downwards. Necks shown in neutral
position with respect to heads with horizontal
HSCCs. <i>Massospondylus</i> after Sues et al. (2004:fig. 1A),
<i>Camarasaurus</i> after Gilmore (1925:pl. XVI), <i>Diplodocus</i>
after Hatcher (1901:pl. II).