Late Jurassic (Oxfordian-Kimmeridgian) brachiopods of the El Bayadh Area (Central Saharan Atlas, Algeria): biostratigraphy, stratigraphic revision, Paleobiogeography and paleoecology

Mahboubi CY, Radulovic BV, Ouali Mehadji A, Ayoub-Hannaa W, Munnecke A (2021)

Publication Type: Journal article

Publication year: 2021

Journal

Historical Biology Taylor & Francis

DOI: 10.1080/08912963.2020.1861609

Abstract

The Upper Jurassic rocks of the El Bayadh Area (Central Saharan Atlas, Algeria) are composed of mixed siliciclastic-carbonate rocks, which were roughly assigned to a Kimmeridgian-Hauterivian age in previous studies. Based on our studies, the succession can be subdivided into five new formations; from base to top: the Theniet Et-Temar, Ksel, Laguremi, Boualem, and the Sfissifa formations. Brachiopod faunas have been recorded from two levels. The lower one is located in the Theniet Et-Temar Formation, and the upper one in the Sfissifa Formation. Two brachiopod species Lacunosella (Lacunosella) arolica and Moeschia alata from the first level and Xestosina arguta from the second level have been recorded for the first time not only in Algeria but also in Africa. Based on the new findings, the age of the studied section can be restricted to the middle Oxfordian at the base and to the upper Kimmeridgian at the top. The stratigraphic successions between the two levels (70 m) are nearly barren except for dinosaur footprints, which were tentatively assigned to a Lower Cretaceous age by previous workers. However, this succession can be attributed to an upper Oxfordian-lower Kimmeridgian age now based on its brachiopod faunas.

Authors with CRIS profile

Axel Munnecke Professur für Paläontologie (Schwerpunkt Faziesanalyse)

Involved external institutions

Université d'Oran 2 Mohamed Ben Ahmed / 2 جامعة وهران DZ Algeria (DZ) University of Belgrade / Универзитет у Београду RS Serbia (RS)

How to cite

APA:

Mahboubi, C.Y., Radulovic, B.V., Ouali Mehadji, A., Ayoub-Hannaa, W., & Munnecke, A. (2021). Late Jurassic (Oxfordian-Kimmeridgian) brachiopods of the El Bayadh Area (Central Saharan Atlas, Algeria): biostratigraphy, stratigraphic revision, Paleobiogeography and paleoecology. Historical Biology. https://dx.doi.org/10.1080/08912963.2020.1861609

MLA:

Mahboubi, Chikh Younes, et al. "Late Jurassic (Oxfordian-Kimmeridgian) brachiopods of the El Bayadh Area (Central Saharan Atlas, Algeria): biostratigraphy, stratigraphic revision, Paleobiogeography and paleoecology." Historical Biology (2021).

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