Figure 3 in The rarity of gastroliths in sauropod dinosaurs - a case study in the Late Jurassic Morrison Formation, western USA

Figure 3. Section of R. T. Bird's Howe Quarry map showing the Barosaurus bones (yellow; A – pubis; B – abdominal rib?) as well as the gastroliths seen in the photograph in Fig. 2. The bones of the Barosaurus individual were partially articulated. Redrawn and modified from Rice and Bierwert (1935) and Michelis (2003).