Template:Kennedy, Cobban & Scott, 2000
- Kennedy, W.J., Cobban, W.A. & Scott, G.R. 2000. Heteromorph ammonites from the Upper Campanian (Upper Cretaceous) Baculites cuneatus and Baculites reesidei zones of the Pierre Shale in Colorado, USA. Acta Geologica Polonica 50(1): 1–20. PDF