Véra Eisenmann

Véra Eisenmann

Les amateurs de Chevaux, curieux de leur évolution, trouveront ici quelques articles publiés à leur intention dans la rubrique « Diffusion des connaissances ».

Toutefois la majeure partie du site, toujours en construction, est destinée àdes spécialistes et fournit des informations (sytème de mesures, mesures, illustrations, photographies, commentaires, bibliographie) concernant l’ostéologie des Equidés. Pour le moment, c’est surtout les Equidés actuels et quelques Equus fossiles (Equus, Allohippus, Plesippus) qui sont documentés.
En ce qui concerne les Hipparions au sens large, mes données sur les formes d’Amérique du Nord (Merychippus, Cormohipparion, etc.) sont disponibles (en anglais) ainsi que celles sur certains Hipparions de l’ex-Union Soviétique, de France et de Grèce.

Mode d’emploi.

Les numéros (1, 2, 3, etc.) dans les tableaux font référence à des mesures décrites dans les rubriques « Outils Système de mesures pour les os et les dents d’Equus (et d’Hipparions)». Chaque os est figuré avec les légendes correspondantes, mais il faut cliquer sur les vignettes pour que le dessin apparaisse en taille normale.
La rubrique « Outils » contient aussi des explications pratiques concernant des méthodes d’étude (diagrammes de Simpson, estimations de hauteurs au garrot, différenciation des premières phalanges antérieures et postérieures, etc.).

WELCOME.

Most of this site is, and will be, devoted to equids from Merychippus to extant Equus. The information (metric data, photographs, bibliographic references) is given in order to help research specialists or students with their work. Some publications (in « Diffusion des Connaissances ») are intended for a broader public.
The main linguage of this site is French but many articles were translated in English (in particular those in « Tools » concerning methods of measurements).

Instructions for use.

Numbers (1, 2, 3, etc.) inside the tables refer to measurements described in « Tools - System of measurements for Equus (or Hipparion) bones and teeth » where corresponding illustrations and captions may be found for each bone (you have to click on the reductions to make them appear full-size).

The rubric « Tools » contains also practical explanations of techniques such as Simpson’s ratio diagrams, or « recipes » for calculating the withers height or for differenciating anterior and posterior phalanges.


Most recent articles


Most recent articles


Mezin, Introduction

Tuesday 11 October 2011
Mezin (Ukraine) is a prehistoric site about 24000 years old well known for its shelter in mammouth bones (http://donsmaps.com/wolfcamp.html). Remains of Equus at the Zoological lnstitute of Kiev, are well preserved although not very abundant. They do not look homogeneous, probably because they (…)


Introduction

Thursday 6 October 2011
About 50 years ago, Jean Brunet, who was studying Equus and Hipparion, took photographs of some British equids, in particular of Hipparion teeth from the Red Crag, Suffolk and left them to me. Some of the teeth were illustrated and discussed by Pirlot (1956). Metapodials of H. crassum have (…)


Montredon, Introduction

Monday 26 September 2011
The Vallesian Hipparion from Montredon have already been described and discussed in an old paper 64.Les Périssodactyles Equidae de Montredon.. Here raw data (instead of statistical tables) and more photographs are made available. The material is not homogeneous: fossils of Hipparion (…)


Introduction

Thursday 21 July 2011
This section contains mainly my personal data (photographs and measurements). Some photographs were also taken from the thesis of Maria-Teresa Alberdi : El Genero Hipparion en Espaà±a, Nuevas formas de Castilla y Andalucia, revision e historia evolutiva. Madrid 1972. See also : – Alberdi, (…)


Comparisons with Old World Hipparions

Thursday 3 June 2010
The scatter diagram SD-6 shows that (as far as I know) all Old World Hipparion skulls belong to Group B except H. prostylum (Lubéron LY 592) which has the same proportions as Group A-8 ( Ratio diagram A-8 and H. prostylum). – H. hendeyi (Langebaanweg E 22187), although larger, resembles (…)


Chronology

Thursday 3 June 2010
From the chronology of the sites (probably outdated table), it appears that the Group A is very old: Thomson, Echo Quarry, Trinity River. Even the brachyodont Mesohippus, Miohippus (Meso-Mio), Hypohippus, Megahippus and Parahippus (Hypo-Mega-Para) have the same shortness of the naso-incisival (…)


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

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