Véra Eisenmann
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Amerhippus

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Amerhippus leoni and "Equus conversidens" (Amerhippus)

mardi 1er octobre 2013 par Véra Eisenmann
"Equus conversidens" group The type upper cheek teeth of E. conversidens Owen 1869 figured correctly by Hibbard (1955) are so close in morphology to those usually referred to E. semiplicatus (Fig.1) that one may wonder if they do not belong to the same species. Since there are no associated (...)


A. fraternus et al., Appendix (Amerhippus fraternus and related species)

mardi 7 mai 2013 par Véra Eisenmann
1. Correlation between cranial diastema (6) and cranial muzzle length (5). From the diastema lengths given by Hulbert it is possible to estimate the muzzle lengths using a regression calculated on extant E. caballus (Fig.A). 2. Correlation between mandibular diastema (3) and mandibular muzzle (...)


A. fraternus et al., tables (Amerhippus fraternus and related species)

mardi 7 mai 2013 par Véra Eisenmann


A. fraternus et al., diagrams (Amerhippus fraternus and related species)

mardi 7 mai 2013 par Véra Eisenmann


A. fraternus et al., photographs (Amerhippus fraternus and related species)

mardi 7 mai 2013 par Véra Eisenmann


Amerhippus fraternus et al. (Amerhippus fraternus and related species)

mardi 7 mai 2013 par Véra Eisenmann
Cedar Meadow Spring (Itchetucknee), Rancholabrean 1. Accepting the Rancholabrean cranium from Cedar Meadow FAM 116143 (Fig.1) as the lectotype of E. fraternus, the following observations can be made. The specimen lacking part of the occiput, there is no saying if the vertex length was, as in (...)


Amerhippus fraternus and related species, Introduction (Amerhippus fraternus and related species)

mardi 7 mai 2013 par Véra Eisenmann

This article is not intended to make clear the extremely confused and confusing taxonomy of "Equus fraternus" and of actually or allegedly related equids. It intends only to bring together data and photographs collected in the bibliography or by myself as well as tentative reconstructions of fossils and biometrical and morphological comparisons. Although resemblances do not guarantee conspecificity, I believe they must be pointed.



Amerhippus occidentalis (Amerhippus)

lundi 11 mars 2013 par Véra Eisenmann
Rancho La Brea et MacKittrick, Californie : E. occidentalis E. occidentalis, Leidy, 1865, Proc. Acad. Nat. Sci., 94. California. “Types” are from Tuolumne Co. (aurifere deposits) and tars of Buena Vista Lake. SKULL Fig.1 - Cranium of A. occidentalis, AMNH 14396, Rancho La Brea. The size is (...)


Amerhippus and Caballines : Cranial differences (Amerhippus)

lundi 11 février 2013 par Véra Eisenmann


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