Abstract
We describe a sample of cranial appendages and isolated dentition of the Palaeomerycids ruminants from the Upper Aragonian localities of La Barranca (Zaragoza, Spain) and La Grive-Saint-Alban (Isere, France). The most characteristic fossils are two frontal protuberances which are morphologically close to those of Ampelomeryx ginsburgi although differing on the orientation of the ossicone apex. The dentition is comparable in size and morphology to that of Ampelomeryx magnus from Sansan (France). During the Aragonian in the Central Iberian Basins three different and successive Palaemerycids assemblages are recognized. This succession could be correlated with the paleoclimatic pattern observed in the same area.
Highlights
We describe a sample of cranial appendages and isolated dentition of the Palaeomerycids ruminants from the Upper Aragonian localities of La Barranca (Zaragoza, Spain) and La Grive-Saint-Alban (Isère, France)
La posterior desaparición de estas formas y nueva aparición de paleomerícidos muy braquiodontos, semejantes a los de yacimientos como Sansan (MN6), Steinheim u Öhningen (MN7)(Lartet, 1851; Filhol, 1891; Astibia, en prensa; Fraas, 1870; Meyer, 1851), podrían estar relacionadas con el descenso térmico e incremento de la humedad que a partir del Aragoniense superior se dio, a la par que en otras zonas del continente, en el interior de Iberia
Summary
MNCNLBa, apéndice supraorbitario (osicono) derecho; MNCNLBb, serie P4/-M1/ derecha; MNCNLBc, M3/ derecho; MNCNLBd, fragmento de P/3 (?) derecho; MNCNLBe, fragmento mandibular con serie M/2-M/3 derecha. Material depositado provisionalmente en el Museo Nacional de Ciencias Naturales de Madrid
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