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Miocene echinoids from the Sadat area, south Gebel Ataqa, NW Gulf of Suez, Egypt: systematics, palaeobiogeography

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Abstract

The echinoid fauna from the Miocene sedimentary succession cropping out south Wadi Tweirig, and Wadi Hommath, south Gebel Ataqa, NW Gulf of Suez, has been examined with the aim to known their stratigraphic and paleogeographic distribution. The Miocene succession includes two formations: Sadat Formation, unconformably overlying the middle/upper Eocene rocks at the base and Hommath Formation at the top. Twenty-eight echinoid species (8 regular and 20 irregular) belonging to 18 genera, 13 families, and 7 orders have been identified, systematically described, and illustrated in this work. Eleven species are recorded for the first time from Egypt: ten of these came from the Hommath Formation (Schizechinus cf. serresii Desor (1856), Schizechinus pentagonus Kier 1972, Clypeaster cf. martini des Moulins 1837, Scutella checchiae occidentalis Desio 1934, Scutella melitensis Airaghi 1902, Echinodiscus desori Duncan and Sladen 1883, Echinolampas cf. zeitensis Fourtau 1920, Schizaster lovisatoi Cotteau 1895, Agassizia (Agassizia) powersi Kier 1972, and Hemipatagus ocellatus Defrance (1827)), and one from the Sadat Formation (Clypeaster campanulatus Schlotheim (1820)). The identified fauna shows a strong affinity with the Mediterranean bio-province.

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  1. Geology Department, Sohag Faculty of Science, Sohag University, Sohag, Egypt

    Atef Abdelhamied Elattaar

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Elattaar, A.A. Miocene echinoids from the Sadat area, south Gebel Ataqa, NW Gulf of Suez, Egypt: systematics, palaeobiogeography. Arab J Geosci 10, 250 (2017). https://doi.org/10.1007/s12517-017-3033-x

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