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Distribution de Megaporellaboulangeri Deloffre et Beun, 1986 (algue dasycladale) dans le Jurassique du bassin atlantique marocain |
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| Authors: | Mohammed-Said Bouaouda Filippo Barattolo Abdelmalek El Kamar |
| Affiliation: | a Département de géologie, unité de stratigraphie intégrée et micropaléontologie, faculté des sciences, université Chouaib-Doukkali, BP 20, 24000 El Jadida, Maroc b Dipartimento di Scienze della Terra, Universita di Napoli Federico II, Largo San Marcellino, 10, 80138 Napoli, Italie c Département de géologie, université Moulay-Ismail, faculté des sciences, Zitoune, Meknès, Maroc |
| Abstract: | The recent biostratigraphic and micropaleontologic works permitted to specify the distribution of Megaporellaboulangeri Deloffre and Beun in the Jurassic of the Moroccan Atlantic basin. The lower limit of the extension of this dasycladale alga, earlier attribued to the Early Kimmeridgian by Deloffre and Beun (1986), is currently placed in the Early Callovian, on the basis of the age provided by Megaporellaboulangeri biozone. The Otternstellaarabica biozone dates the upper limit of the extension of the species of the Early Oxfordian. Megaporellaboulangeri proliferates in the borders of the basin where the internal lagoons facies dominate, however it is absent in the western parts with open sea facies. |
| Keywords: | Jurassique Callovien infé rieur Algue dasycladale Bassin atlantique marocain Maroc |
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