THE UPPER OLIGOCENE SMALL MAMMALS FROM HI NOJOSA-DE-JARQUE LIMESTONES(MONTALBAN-ALIAGA, TERUEL, SPAIN)

Hinojosa de Jarque 2 is a rich fossiliferous locality from the Cobatil las bassin (Aliaga, Iberian Chaine, Teruel). 12 species of rodents hav e been recognized, one of them is new : Eomys alulghensis nov. sp. Oth er rodent remains are known taxons : Eomys aff. huerzeleri, Pseudother idomys cf. schaubi, Pseudocricetodon cf. thaleri, Eucricetodon gr. pra ecursor-collatus, Adelomyarion vireti, Issiodoromys pseudanaema, Archa eomys laurillardi, Peridyromys aff. murinus, Gliravus cf. bruijni, Ple siosminthus promyarion and Heteroxerus lavocati. Among the Insectivora order, Paratalpa cf. micheli has been described. This fossil associat ion is characteristic of a late Oligocene age, older than Coderet (MP 30) and younger than Pech du Fraysse (MP 28). It could be equivalent t o the standard level of Rickenbach (MP 29) but slightly younger. The d egree of evolution of L pseudanaema, Adelomyarion vireti and Pseudocri cetodon cf. thaleri proves the similarity with La Milloque fauna, just below the reference level of Coderet and slightly younger than Ricken bach. Hinojosa de Jarque 2 has yielded the richest mammal fauna from t he Late Oligocene in Spain, only poorly known from Villanueva del Rebo llar (Teruel). The study of the rodents makes possible to increase the faunal knowledge from the european Oligocene and a better understandi ng of their evolutive patterns.