Most recent articles
Most recent articles
Correlation between length of upper P2-M3 and size of the bar (32)
Wednesday 2 June 2010
The correlation between length of the cheek teeth P2-M3 and preorbital bar length (Scatter diagram 5) does not follow the same regression line for Cormohipparion (all morphs) and other archaic Northamerican equids.
Lack of relation between the main axial skull proportions and the pre-orbital bar
Wednesday 2 June 2010
It seems that the main axial proportions of the skull are independent from the existence and/or type of POF.
– For instance, on the ratio diagram of Cormohipparion A (A-1), the skull 42449 from Kepler looks like a typical Cormohipparion A although it has no POF.
– The ratio diagram A-2 shows (…)
Introduction
Saturday 29 May 2010
In 1981, the American Museum of Natural History invited a group of Horse specialists at a "New York International Hipparion Conference" with many purposes. One of them was to bring together for the duration of the conference original interesting specimens, in particular skulls, dispersed through (…)
Discrimination of Anterior and Posterior First Phalanges
Saturday 10 October 2009
Differences between anterior and posterior Ph I
Correlations between skull and mandible dimensions
Thursday 16 April 2009
BASILAR LENGTH AND MAXIMAL MANDIBULAR LENGTH IN ALLOHIPPUS AND EXTANT EQUUS: SKULL-MANDIBLE CORRELATIONS
1. Skull and Mandible lengths
For a sample of 375 various extant Equus skulls and mandibles, the correlation is good: R2=0.97.
Regressions are:
– Basilar length of the skull (1) = (…)
Weight Estimations
Wednesday 15 April 2009
WEIGHT ESTIMATIONS
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 (…)
Variability Size Index (VSI)
Friday 3 April 2009
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 (…)
Tools Introduction
Thursday 2 April 2009
This chapter contains the description of useful "tools" such as Simpson’s ratio diagrams, ways of estimating the height at the withers, etc.
Withers height estimations
Wednesday 1 April 2009
WITHERS HEIGHT
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 (…)
Simpson’ ratio diagrams
Monday 30 March 2009
INTRODUCTION
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 (…)
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