[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 Ã des 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 Â« Diffusion des Connaissances Â ») 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 Â« Tools Â » concerning methods of measurements).

Instructions for use.

Numbers (1, 2, 3, etc.) inside the tables refer to measurements described in Â« Tools - System of measurements for Equus (or Hipparion) bones and teeth Â » 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 Â« Tools Â » contains also practical explanations of techniques such as Simpson’s ratio diagrams, or Â« recipes Â » for calculating the withers height or for differenciating anterior and posterior phalanges.

Articles les plus récents

Olvia, unknown level, phalanges

vendredi 28 février 2014

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Natural Trap, Wyoming, Introduction

samedi 19 octobre 2013

It was John Howe who studied the equids of Natural Trap but his manuscript was never published. Instead, part of his work was included in "Eisenmann V., Howe J., Pichardo M. 2008 (published in 2011) : Old World Hemiones and New World slender species (Mammalia, Equidae). Palaeovertebrata (…)

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Natural Trap, Tibiae, Data

vendredi 18 octobre 2013

In Table 1 are the original data (2 sheets) provided by John Howe. Some measurements seemed aberrant ; the are printed in red and highlighted in yellow ; the same specimen was measured twice and only the mean (X) was used. In Table 2 the corrected data I used are printed and highlighted in blue (…)

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Natural Trap, Crania and Mandibles, Data

vendredi 18 octobre 2013

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Natural Trap, Ph3, Data

vendredi 18 octobre 2013

John Howe sent me copies of his data on seven sheets. Some data were redundant. In Table 1 you may find the original data and in Table 2 - the ones I have used. A few phalanges were obviously different from the rest by their size. They will be discussed later, after the bulk of the material (…)

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Natural Trap, Ph2, Data

vendredi 18 octobre 2013

Like for the first phalanges, I received from John Howe copies of his data on second phalanges (Ph2) on separated (10) sheets. A few data were redundant, in that cases I used their mean noted ’-X’. In Table 1, you may find the original data, in Table 2 - the ones I used, and in Table 3 - the (…)

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Natural Trap, Ph1, Data

vendredi 18 octobre 2013

Like the rest of the material of Natural Trap, the first phalanges (Ph1) were measured by John Howe and his student(s). John Howe sent me copies of these data on nine sheets. Some data appeared redundant, either because they originated from the right and left side of the same animal or because (…)

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Natural Trap, MT, Data

vendredi 18 octobre 2013

Like the MC of Natural Trap, the third metatarsals (MT) were measured by John Howe (sheets I and II) and one student (sheets III and IV). The diagrams (Fig.1,2) show again that they did not measure the diaphysis depth (4) in the same way. There is no way to increase the measure 4 but there is a (…)

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Natural Trap, MC, Data

vendredi 18 octobre 2013

Like the rest of the material of Natural Trap, the third metacarpals (MC) were measured by John Howe (sheets I and II) and one student (sheets III and IV). Looking at the diagrams (Fig.1,2) it is obvious that they did not measure the diaphysis depth (4) in the same way. There is no way to (…)

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Natural Trap, Humeri, Data

vendredi 18 octobre 2013

In Table 1, are the original data provided by John Howe (2 sheets). Scatter diagrams (Fig.1 and 2) show that Natural Trap humeri are longer than in extant E. hemionus onager (Fig.1) as well as wider and flatter (Fig.2). As in other limb bones, a few specimens seem larger, possibly because (…)

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