Whyte, M.A. & Romano, M. 1994. Probable sauropod footprints from the Middle Jurassic of Yorkshire, England. Gaia: Revista de Geociencias, Museu Nacional de Historia Natural, Lisbon, Portugal, 10: 15 - 26.

Wrather, W.E. 1922. Dinosaur tracks In Hamilton County, Texas. Jour. Geol., Vol. XXX, p. 354 - 360.

Welles, S. P. 1971. Dinosaur footprints from the Kayenta Formation of Northern Arizona. Plateau, 44: 27-38.

Western, D. & Moss, C. 1983. Age estimation and population age structure of elephants from footprints dimensions. Jour. Wildlife Manag., 49: 1192- 1197.

Woodhams, K. E. & J. S. Hines 1989. Dinosaur footprints from the Lower Cretaceous Of East Sussex, England, pp. 301-307. In D. D. Gillette & M. G. Lockley, (eds.), Dinosaur Tracks and Traces. Cambridge: Cambridge University Press.