Rudists(Bivalvia) from a Cretaceous Platform in Northern Egypt: Taxonomy and Paleobiogeography  

作　　者：Yasser SALAMA Jamaan S.AJAREM Ahmed A.ALLAM Ahmed M.ALMALKI 

机构地区：[1]Geology Department,Faculty of Science,Beni-suef University,Beni-suef 65211,Egypt [2]Department of Zoology,College of Science,King Saud University,Riyadh 11451,Saudi Arabia [3]Department of Zoology,Faculty of Science,Beni-suef University,Beni-suef 65211,Egypt

出　　处：《Acta Geologica Sinica(English Edition)》2021年第6期1967-1983,共17页地质学报（英文版）

基　　金：King Saud University for funding this work through the Researchers Supporting Project(no.RSP-2020/149)。

摘　　要：New well-preserved rudist materials come from the Barremian–Turonian marine formations in the Yelleg, Minsherah, Maaza, and Raghawi sections in North Sinai, northern Egypt. There, 17 discovered rudist species belonging to 13 genera and seven taxonomic families are described in detail as follows: Eoradiolites plicatus(Conrad), Eoradiolites liratus(Conrad), Praeradiolites ponsianus(d'Archiac), Archaeoradiolites sp., Bournonia africana Douvillé, Bournonia fourtaui Douville, Biradiolites lombricalis(d'Orbigny), Biradiolites zumoffeni Douville, Radiolites lewyi lewyi Parnes, Radiolites sauvagesi(d'Hombres-Firmas), Durania arnaudi(Choffat), Toucasia carinata(Matheron), Toucasia sp., Neocaprina raghawiensis Steuber and Bachmann, Sellaea sp., Ichthyosarcolites sp. and Horoiopleura sp.. The Cenomanian deposits in the northern Eastern desert of Egypt only contain E. liratus. The domination of the Cenomanian rudist species in North Sinai, however, is attributed to changes in the platform, which passes mainly from carbonate in the north to siliciclastics in the south. The presence of Horiopleura sp. in the late Barremian-early Aptian deposits is documented for the first time, which suggests the expansion of taxa of the genus Horiopleura Douville to North Sinai during this interval. The age of the rudist species is documented from the late Barremian-Turonian formations, with their geographic distribution in the Mediterranean region considered..

关 键 词：invertebrate paleontology mollusks RUDISTS TAXONOMY PALEOBIOGEOGRAPHY Barremian–Turonian EGYPT 

分 类 号：P534.53[天文地球—古生物学与地层学] Q915.8[天文地球—地质学]