Late Cretaceous (Cenomanian-Turonian) ammonites from southern Morocco and south western Algeria
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- 作者：Christian Meister ; André Piuz ; Lionel Cavin ; Larbi Boudad…
- 关键词：Ammonites ; Cretaceous ; Cenomanian–Turonian ; Biostratigraphy ; Taxonomy ; Africa ; Morocco ; Algeria
- 刊名：Arabian Journal of Geosciences
- 出版年：2017
- 出版时间：January 2017
- 年：2017
- 卷：10
- 期：1
- 全文大小：
- 刊物类别：Earth and Environmental Science
- 刊物主题：Earth Sciences, general;
- 出版者：Springer Berlin Heidelberg
- ISSN：1866-7538
- 卷排序：10
文摘
On the basis of nine lithostratigraphical profiles, 23 cephalopods taxa (nautilus and ammonites) are described from the Preafrican Trough and the Kem Kem region. Among them, a new species is proposed: Spathites (Jeanrogericeras) asflaensis nov. sp. This fauna is placed in its biostratigraphical framework and correlated with the standard zonation of the late Cenomanian–early Turonian. Moreover, stratigraphic correlations are proposed for the whole Maghreb from the Tarfaya Basin in the west to central Tunisia in the east. Selected taxa reveal the paleogeographical context of the western Tethys; a complex distribution of emerged areas and epicontinental seas impacted by an important marine trangression that constantly modified the costaline.