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  • 1
    Publication Date: 2012-03-01
    Description: [fr] La liste faunique des petits mammifères d’Estrepouy (Bassin Aquitain, France) est revue: du matériel nouveau est ajouté et les déterminations sont mises à jour. Les petits mammifères sont représentés par une trentaine d’espèces (dont sept insectivores), alors que le gisement un peu plus récent de Wintershof- West (Allemagne) - représentatif du niveau mammalien MN3 - atteint plus de quarante espèces (dont vingt insectivores). Les différences dans la représentation des espèces semblent indiquer à Estrepouy un paléoenvironnement plus sec; toutefois, en Espagne, le paléoenvironnement du niveau MN3 semble encore plus sec.
    Print ISSN: 0367-0449
    Electronic ISSN: 1988-3250
    Topics: Geosciences
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  • 2
    Publication Date: 2024-01-12
    Description: Two new species of Pseudocricetodon are described: P. simplex sp. nov. is characterised by a simple dental pattern in the lower molars. It has been discovered almost simultaneously in Oligocene beds near Mart\xc3\xadn del R\xc3\xado (Teruel Basin) and near Alcorisa on the southern border of the Ebro Basin. P. adroveri sp. nov. had previously been described from Vivel del R\xc3\xado as P. aff. thaleri, and is characterised by a complex dental pattern. These two new species change the current ideas on the evolution of the genus Pseudocricetodon.
    Repository Name: National Museum of Natural History, Netherlands
    Type: info:eu-repo/semantics/article
    Format: application/pdf
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  • 3
    Publication Date: 2024-01-12
    Description: A new species of Theridomys, T. truci, is described. It occurs in a stratigraphic succession at Saint Martin de Castillon (Vaucluse, France) approximately at the boundary between Lower and Upper Oligocene. Its characteristics are: small size; moderate hypsodonty; thin and regular enamel borders; flat occlusal surfaces; wide and short synclines and synclinids; first syncline of the upper molars of the same size as the second; the first synclinid begins its development in the lower molars and the fourth syncline in the upper molars; the external tubercles of the upper molars are fused, forming a labial wall. The phyletic relationships of T. truci are discussed and a new hypothesis on the evolution of the T. lembronicus lineage is proposed. Une nouvelle esp\xc3\xa8ce de Theridomys, T. truci, trouv\xc3\xa9e dans plusieurs niveaux de la s\xc3\xa9rie stratigraphique de Saint-Martin-de-Castillon (Vaucluse, France), \xc3\xa0 la limite entre l\'Oligoc\xc3\xa8ne inf\xc3\xa9rieur et l\'Oligoc\xc3\xa8ne sup\xc3\xa9rieur, est d\xc3\xa9crite. Ses caract\xc3\xa8res sont: une faible taille, une hypsodontie mod\xc3\xa9r\xc3\xa9e, un \xc3\xa9mail relativement mince et r\xc3\xa9gulier sur tout le pourtour de la dent, une surface occlusale plane, des synclinaux et synclinides larges et courts. Aux molaires sup\xc3\xa9rieures, le premier synclinal est de m\xc3\xaame longueur que le second et le 4e synclinal appara\xc3\xaet; les tubercles externes fusionnent en une muraille labiale continue. Aux molaires inf\xc3\xa9rieures, le premier synclinide commence son d\xc3\xa9veloppement. Les relations phyl\xc3\xa9tiques de T. truci sont discut\xc3\xa9es et une nouvelle hypoth\xc3\xa8se concernant l\'\xc3\xa9volution de la lign\xc3\xa9e de T. lembronicus est propos\xc3\xa9e.
    Repository Name: National Museum of Natural History, Netherlands
    Type: info:eu-repo/semantics/article
    Format: application/pdf
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