Skull of a Rüppell's fox
Date 1980
Source The contemporary land mammals of Egypt (including Sinai) (1980) by Dale J Osborn and Ibrahim Helmy (see here http://www.archive.org/details/contemporaryland05osbo for copyright status)
Author Dale J. Osborn and Ibrahim Helmy
Source: https://commons.wikimedia.org/wiki/File:Vulpesrupelliskull.png

Rüppell's fox or Rueppell's fox (Vulpes rueppellii) is a species of fox living in North Africa, the Middle East, and southwestern Asia. Since it prefers sandy or rocky deserts, this fox is also called the sand fox.