Fig. 6
From: Nomad aesthetic: Cattle modifications among the northern Turkana of north west Kenya

Horn deformation: a A favourite-ox showing “forward pointing” horns, Lotikipi Plain. b A depiction of an ox with a similar horn deformation from the rock art of Wadi Mathendous area, Libya, approx 7000 to 6000 BC (David Coulson, Trust for African Rock Art). c A favourite-ox showing horn asymmetry: one horn bent downwards, (Kidepo, Uganda). d Detail of a similar horn deformation visible on the East Wall reliefs of the tomb of Ptahhotep in Saqqara, Egypt, approx 2500 BC (Thierry Benderitter, https://www.osirisnet.net)