A rich microfossil assemblage composed of six charophyte species and fifteen ostracod taxa has been recovered from eight stratigraphic sections raised in Lower Cretaceous rocks of the Abeih Formation/upper part of the Grès de base unit in Mount Lebanon (Central-South Lebanon). Four depositional environments have been distinguished within this unit based on sedimentological and microfacies analyses: fluvial, coastal freshwater lakes, estuary (intertidal and subtidal) and shallow marine. The charophyte assemblage is composed of Sphaerochara asema, aff. Mesochara harrisii, Atopochara trivolvis var. trivolvis, Ascidiella reticulata, Clavator ampullaceus, and Munieria martinclosasi extracted from costal freshwater lakes facies. The associated ostracod fauna is mainly represented by Cypridea libanensis, C. heliopolisensis, C. aaleyensis recovered along with accessory carapaces of C. baidarensis, C. quadrangulata, Cypridea sp. 1, Cypridea sp. 2, and Timiriasevia cardiformis. Part of this freshwater microfossil assemblage (A. trivolvis var. trivolvis, A. reticulata, C. ampullaceus, Cypridea libanensis, C. heliopolisensis, and C. aaleyensis) has been found in facies related to brackish water characterized by marine ostracods such as Fastigatocythere aff. naftaliensis, Fastigatocythere sp., Metacytheropteron parnesi, Majungaella (Progonocythere?) sp. Pontocyprella sp., Asciocythere sp., and Damonella sp. Shallow marine elements are also abundant including dasycladalean thalli, foraminifera and echinoid remains. This study indicates that the Abeih Formation/upper part of the Grès de base unit is late Barremian/early Aptian in age. The microfossil assemblage is dominated by endemic to subcosmopolitan taxa characteristic of the Levantine Island at the southeastern margin of the Tethys during the Early Cretaceous.

从黎巴嫩南部（中南部黎巴嫩）阿贝伊组下白垩统/ Gres de基本单元上部的八层地层中，发现了丰富的微化石组合，该组合由六种佛手藻种和十五种兽脚类生物群组成。根据沉积学和微相分析，已在该单元内区分出四种沉积环境：河流，沿海淡水湖泊，河口（潮间带和潮间带）和浅海。风化菌的组合由球藻（Sphaerochara asema），aff。Mesochara harrisii，Atopochara trivolvis var。旋毛虫，网状Ascidiella，Clavator ampullaceus和从沿海淡水湖相中提取的Munieria martinclosasi。相关联的介形类动物群主要由表示Cypridea libanensis，C. heliopolisensis，C. aaleyensis用的附件甲壳回收沿着C. baidarensis，C. quadrangulata，Cypridea藻。1，Cypridea sp。2，和Timiriasevia cardiformis。这种淡水微体化石组合的一部分（A. trivolvis变种trivolvis，A.马丁，C. ampullaceus，Cypridea libanensis，C. heliopolisensis和在与咸咸水有关的相中发现了C. aaleyensis（C. aaleyensis），其特征为海洋类兽脚类，如Fastigatocythere aff。naftaliensis，Fastigatocythere sp。，Metacytheropteron parnesi，Majungaella（Progonocythere？）sp 。Pontocyprella sp。，Asciocythere sp。和Damonella sp.。浅海元素也很丰富，包括dasycladalean thalli，有孔虫和棘突类动物遗迹。这项研究表明，Gres de base的Abeih地层/上部单位年龄为巴雷米亚晚期/阿普提安早期。微化石组合以白垩纪早期特提斯东南缘黎凡特岛的地方性至大都会以下生物分类为主导。