Detailed descriptions of each studied cranium are long and tiresome.
I have drawn Simpson’s ratio diagrams for each cranium and observed that, fortunately, most caballine crania fall approximately into one of the following groups.
1. Horse from Jaurens : on the diagram the largest (relative to E. hemionus onager) value is the muzzle width (measure nÂ°17).
2. Horse from Siréjol : the largest values are the Vomer-Basion lenth (nÂ°4), the palatal length (nÂ°2-5), and the muzzle width (nÂ°17).
3. Horse from Valdichiana : the largest values are the Vomer-Basion lenth (nÂ°4), and the muzzle width (nÂ°5).
4. Horse from Voijn : The largest value is the palatal length (nÂ°2-5).
5. Horse from Kotelny : Largest values are palatal length (nÂ°2-5), and least muzzle breadth (nÂ°17bis).
6. Horse from Avenches : the latrgest value is the Vomer-Basion lenth (nÂ°4).