نتایج جستجو برای: oligocene miocene

تعداد نتایج: 7901  

Journal: :Frontiers in Earth Science 2023

For a hundred years the Saint Jacques area has been known to produce rich Oligocene vertebrate fossils, yet only handful of previous studies have focused on this area. Since 2010, we conducted 12 field expeditions Jacques, and here report findings from our paleontological excavations stratigraphical investigations. Twenty-two fossiliferous blocks across are recognized chronostratigraphic framew...

Journal: :Historical Biology 2022

Melissiodon is a rare cricetid with long stratigraphic range, present from the Oligocene until Miocene, only found in western and central Europe except some specimens recovered Anatolia. What makes special its unique dental mandible morphology that has led to many questions regarding relationship other genera type of diet. In this work, we have studied new material attributed German localities ...

Journal: :Earth-Science Reviews 2021

Our study aims to reconstruct the palaeogeography of northern part Lesser Antilles in order analyse whether emerged areas might have existed during Cenozoic, favouring terrestrial faunal dispersals between South America and Greater along present-day arc. The stratigraphy depositional environments islands Anguilla, St Martin, Tintamarre, Barthélemy, Barbuda Antigua are reviewed association with ...

Journal: :Spanish journal of palaeontology 2022

Australian Eocene-Oligocene Ostracoda have been little reported hitherto, this paper representing the first substantial taxonomic study. The 80 species which we identified came from Late Eocene Gull Rock Member of Blanche Point Formation in Willunga Embayment, South Australia (16 species) and lower fossiliferous bed Oligocene Angahook at Bells Headland, Victoria (70 species); only 6 are common ...

Journal: :Earth and Planetary Science Letters 2021

The Qaidam Basin in the core area of arid Inner Asia has been considered undergoing continuous aridification over Cenozoic. However, is marked with expanded lacustrine sedimentation during Oligocene, which contrasts fluvial or deltaic facies stratigraphically below (Eocene) and above (Miocene-present). Oligocene expansion challenges idea persistent aridification. To solve conundrum, we reconstr...

Journal: :Botanical Journal of the Linnean Society 2023

Abstract The Late Oligocene to Early Miocene flora of the Ban Pa Kha Subbasin (Li Basin, northern Thailand) provides a record montane dry tropical oak-pine forests. rich ensemble Fagaceae typical these forests might have existed in wider region Southeast Asia since Eocene times and various fossil plant assemblages represented both lowland (Fagaceae, Dipterocarpaceae) upland Pinaceae) These find...

2007
Barbara J.

The northwestern Gulf of Mexico basin has emerged as an archetype example of a robust, progradational passive margin system that induces substantial translation over underlying detachments due to gravitational loading. Despite this recognition, the difficulties in deep imaging of seismic data have continued to obscure key features of this deformation. Megaregional, 2D, long-offset PSDM data hel...

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