Basilar Length (BL) and Metapodial articular and supra-articular breadths (MC10, MC11, MT10, MT11)
It may be useful to know what metapodials are likely to belong with a given size of skull. Figure 1 shows how distal breadths of MC and MT are related to cranial basilar lengths on extant (...)
Simpson’s ratio diagrams (Simpson 1941, Large pleistocene felines of North America. American Museum Novitates, 1136, p.1-27, 11 fig., New York) provide rapid and easy comparaisons, both of size and shape, for a single bone or a group of bones.
The reference is provided by a single (...)
The height at the withers of a horse used to be expressed in "hands" (one hand = 4 inches) or in “feet” (one foot = 12 inches), and in "inches". Since one inch = 25,4 millimeters, a horse "21 hands high" or “7 feet high” stands 213, 4 cm at the withers. According to Willoughby (...)
VARIABILITY SIZE INDEX (VSI)
The Variability Size Index (VSI) is one of the size index scaling techniques used by archeozoologists (Uerpmann 1982, 1986; Meadow 1986, 1999). Using this technique, global size comparisons are possible even of samples of various but fragmentary and not numerous (...)
Various attempts are possible, in particular those based on the surface of the upper M1, and on some distal metapodial dimensions. No kind of estimation is really good because species do differ by the relations between their anatomical parts and their weight. This is (...)
1. Skull and Mandible lengths
For a sample of 375 various extant Equus skulls and mandibles, the correlation is good: R2=0.97.
Basilar length of the skull (1) = [1.1775 * Maximal length of the mandible (1)] - 16.957.
Maximal length of the (...)
The main and commonly known sexual dimorphism in Equus is the presence of well developed canines at least on the maxillar in males and the almost constant lack of canines in females.
Moreover, the pubian symphysis is flatter in females after their first parturition.
Concerning the limb bones (...)