•0 -> 1.4 m: Medium reddish brown (MRB 4/6) clay-rich siltstone with light greenish gray (5GY 8/1) mottling. The upper surface of the unit is unconformable with unit 2. Overbank deposits;

•1.4 -> 2.2 m: Interbedded mudstone, sandstone, and conglomerate. The lower part is very thin (about 5 cm thick) discontinuous lenses of light gray (N7) horizontal planar bedded very fine to fine-grained sandstone interbedded with clay-rich medium reddish brown (MRB 4/6) siltstone to very fine-grained sandstone. This is capped with a more laterally extensive granule pebble conglomerate bed about the same thickness as the sandstone lenses, which is the actual bone bed. Material is derived from the upper and lower surfaces of the conglomerate. Small channel sandstone and sheet sand;

•2.2 m-> 4.4: Medium reddish brown (MRB 4/6) clay-rich siltstone with light greenish gray (5GY 8/1) reduction mottling, identical to unit 1. Channel sandstone;

•4.4 -> 6.0 m: Light gray (N7) fine to medium-grained clast-supported sandstone with horizontal planar bedding. Channel sandstone. The top is truncated by Quaternary alluvium.