Figure 8.
(a) Isometric and (b) cross-section views of sauropod manus undertrack at a depth of 0.2 m (track generated in substrate of Cu = 110 kN m−2 and halted when track depth reached 0.05 m). Note the transverse ridge running medio-laterally through the track, appearing similar to the three-phase track described by Manning ([16, fig. 6a]; [64, fig. 12.7]). Darker shading represents deeper parts of the track. (c) Theoretical displacement beneath a strip load in a cohesive substrate. If a track is exposed in a layer corresponding to that marked, tracks may appear to contain an internal ridge running across the widest part of the track ((c) modified from [13]).