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Resume En Eubee (Grece), J. Deprat attribue les calcaires des monts Pyxaria et Kandili au Cretace inferieur sous pretexte qu’ils contiennent des fossiles caracteristiques du Barremien et de l’Albien et qu’ils passent progressivement a des calcaires cenomaniens. Or, ces calcaires ont ete dates depuis du Trias et du Jurassique et le Cenomanien est partout transgressif. D’une facon generale, exception faite du Cretace superieur riche en Rudistes et connu depuis des travaux plus anciens, une partie importante des attributions stratigraphiques de J. Deprat en Eubee mediane est erronee.

Resume Un tableau de repartition stratigraphique des ostracodes marins du Miocene inferieur a l'Actuel est etabli. Les especes retenues (220 environ) sont celles bien caracterisees morphologiquement et connues en plusieurs endroits de la Mediterranee. Le tableau met en evidence les faits suivants : • les ostracodes du Miocene inferieur sont encore mal connus ; • la diversite specifique est elevee au Tortonien et au Messinien inferieur avant la disparition totale des especes marines au cours des episodes evaporitiques du Messinien superieur ; • au debut du Pliocene, la moitie environ des especes marines du Miocene superieur est reintroduite avec les eaux atlantiques tandis que d'autres especes parviennent par la meme voie en Mediterranee pour la premiere fois ; • a la fin du Pliocene ou au debut du Pleistocene inferieur quelques especes connues en Mediterranee depuis le Miocene inferieur ou avant disparaissent, telles Cytherella sp. gr. transversa et Ruggieria tetraptera, tandis qu'apparaissent quelques « hotes nordiques » dont Hemicythere villosa et Cythere lutea, cependant rares dans les sediments. En application de cette etude, l'âge miocene superieur du Neogene de Skyros (Mer Egee) est confirme, le « Pliocene superieur » de Terquem est attribue au Pleistocene inferieur et l'existence d'une psychrosphere pliocene est refutee.

Recent deep boreholes Γ1 (205 m) and AIG 10 (1001 m), performed in the Aigion area, bring new information on syn-rift deposits. MIS1/Holocene (11.8–4.3 ka BP) and Upper Pleistocene are identified in the upper part of the boreholes. Below Holocene deposits, the borehole AIG 10 crossed successively a detrital system with fine intercalations and a thick development of clay. No specific dating was possible on this lower formation, so the age of the local basal syn-rift deposits is discussed. To cite this article: F. Lemeille et al., C. R. Geoscience 336 (2004).

Latest Eocene–earliest Oligocene deep water ostracods from the Massignano Global Boundary Stratotype Section and Point (GSSP), Central Italy, were studied from a palaeoecological perspective to investigate the psychrospheric event in the Tethys. Although quantitative analyses were hampered by the low incidence of fauna, the high-resolution sampling used in this study (148 samples distributed over a 23-m-thick succession spanning 3 m.y.) allowed the following inferences: (1) overall features (e.g. abundance, diversity, composition) of the assemblages suggest a middle–lower bathyal environment with no significant palaeobathymetrical changes; (2) today a similar fauna, notably characterised by the common occurrence of the genus Agrenocythere, would likely be encountered in upper psychrospheric conditions (water masses beneath the permanent thermocline with a temperature range of 4–10°C); (3) although no noticeable faunal turnover has been recognised throughout the succession, minor faunal changes seem to occur in the first part of the section (probable appearance of Legitimocythere presequenta) and to a lesser extent also across the Eocene/Oligocene boundary. The presumed appearance of L. presequenta (latest Eocene) correlates quite well in timing and possible significance with the faunal changes observed in other microfossil groups (foraminifers and dinocysts). This event is possibly linked to a cooling pulse, which might have been caused by the arrival, or increasing advection, of cold bottom waters in the study area. Faunal evolution across the Eocene/Oligocene boundary is thought to be consistent with an intensification of the cooling trend and an increase of primary productivity, which fits fairly well with the δ13C record. Relationships between the subtle ostracod faunal changes observed in the Massignano GSSP and the main Late Eocene–Early Oligocene psychrospheric event can be only speculative. Nevertheless, we found no evidence that precludes the possibility of interpreting the Massignano ostracod pattern as a subdued, local expression of this major event. Although speculative, this is a reasonable hypothesis, because the investigated area is situated in Western Tethys, far from the main circulation of deep ocean waters.