Fig. 4

Orthophotographs of well-preserved sauropod tracks from the BEB-500-S1 trackway of the Courtedoux-Béchat Bovais tracksite (Marty et al., 2007). The displacement rims (solid line) are roughly elliptical and the manus tracks are partly overprinted. Within the roughly elliptical displacement rim, the actual outline of the foot is often, but not invariably, apparent (outlined by dashed lines). The displacement rim is more reliably present and therefore used as the basis for locating track ‘centers’. The red lines are separated by 50 cm