Cenomanian-Turonian bivalves from eastern Sinai, Egypt

IF 1.8 2区地球科学 Q2 PALEONTOLOGY

Palaeontographica Abteilung A-Palaozoologie-Stratigraphie Pub Date : 2014-02-21 DOI:10.1127/PALA/301/2014/63

Wagih S. Ayoub-Hannaa, F. Fürsich, G. M. Qot

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引用次数: 21

Abstract

68 bivalve species belonging to 13 orders, 29 families, and 51 genera, are systematically described from three Cenomanian-Turonian sections (Gebel Areif El-Naqa, East Themed, and Wadi Quseib) on the eastern side of the Sinai Peninsula. The stratigraphic range and palaeogeographic distribution is given for each species. Nine species are reported from Egypt for the first time. Due to their taxonomic relevance, the microstructure of the rudist taxa has been illustrated. The bivalve fauna strongly resembles that of other Tethyan regions in southern Europe, North Africa, Middle East, and eastern South America. Therefore, most of the identified taxa have a strong Tethyan affinity. The distribution patterns of bivalves have probably been influenced by east-west directed currents during the Cenomanian. However, due to the presence of geographic barriers, extensive shallow marine shelf areas, and narrowing of the Tethys during that time, the current split up, one branch extending in a clockwise direction to southeastern Europe. The opening of the Trans-Saharan Seaway of southern Tethyan bivalves immigrated to western Africa and eastern South America.

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产自埃及西奈半岛东部的塞诺曼-土尔onian双壳类

在西奈半岛东侧的Gebel Areif El-Naqa、East Themed和Wadi Quseib三段，系统描述了双壳类动物68种，隶属于13目29科51属。给出了各种的地层范围和古地理分布。在埃及首次报道9种。由于它们在分类上的相关性，本文对其微观结构进行了描述。双壳动物群与南欧、北非、中东和南美东部的其他特提斯地区非常相似。因此，大多数已鉴定的分类群具有较强的特提斯亲和力。双壳类的分布格局可能在塞诺曼尼亚时期受到东西向洋流的影响。然而，由于地理障碍的存在，广泛的浅海陆架区域，以及当时特提斯河的变窄，洋流分裂了，一个分支沿顺时针方向延伸到欧洲东南部。南特提斯双壳类动物通过跨撒哈拉海道的开放迁徙到西非和南美东部。

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来源期刊

Palaeontographica Abteilung A-Palaozoologie-Stratigraphie 地学-古生物学

CiteScore

3.80

自引率

3.70%

发文量

审稿时长

>12 weeks

期刊介绍： Palaeontographica Section A publishes peer reviewed results of studies on palaeozoology, paleoecology and biostratigraphy. Its large paper format provides sufficient space for large tables, illustrations, photographs and Palaeontographica’s renowned plates. Published contributions span all areas of palaeozoology, i.e., systematic, phylogenetic and ecological aspects. Careful peer review ensures the high quality of the papers, covering localities all over the world. Many landmark papers in palaeozoology and biostratigraphy were published in Section A of Palaeontographica. This includes numerous lavishly illustrated monographs of certain groups of fossils and stratigraphic ranges. These monographs, are typical for Paleontographica papers, characterised by numerous highest quality plates and are printed on special high quality paper for excellent reproduction of picture plates.