Template:Bown & Kraus, 1983
- Bown, T.M. & Kraus, M.J. 1983. Ichnofossils of the alluvial Willwood Formation (Lower Eocene), Bighorn Basin, Northwest Wyoming, U.S.A. Palaeogeography, Palaeoclimatology, Palaeoecology 43(1–2): 95–128. DOI: 10.1016/0031-0182(83)90050-0 .