Figure 3 (LEFT). Photograph showing trace makers sole markings cast in sandstone (i.e., convex hypichnia) which we suggest reflect a pre-event trace fossil association (see text). The top layers of the semi-lithified clays were eroded away as the turbidity current passed across it. Sands subsequently filled the traces, resulting in sole casts along the bottom of each sandstone layer.
 Figure 4 (RIGHT). Photograph showing a difference in trace maker size between the layers of sandstone. Note the base of an upper sandstone layer contains traces produced from a larger trace maker (perhaps due to greater oxygenation or shallower water depth). Sandstone units above this layer return to the smaller trace makers found beneath this layer.  
   Figure 5 LEFT. Closeup of the larger trace maker sole casts.