Fishes and palaeogeography of the African drainage basins: Relationships between Chad and neighbouring basins throughout the Mio-Pliocene
Fishes and palaeogeography of the African drainage basins: Relationships between Chad and neighbouring basins throughout the Mio-Pliocene
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非洲流域的鱼类和古地理：中新世至上新世乍得与邻近流域的关系
DOI：
10.1016/j.palaeo.2009.01.005
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发表时间：
2009
期刊：
影响因子：
--
通讯作者：
M. Brunet
中科院分区：
文献类型：
--
作者：
O. Otero;A. Pinton;H. Mackaye;A. Likius;P. Vignaud;M. Brunet
回顾了新近纪非洲两种鱼类化石记录，即 Semlikiichthys（Perciformes indet.）和 Calarius（Siluriformes，Ariidae），包括来自乍得露头的新材料。它们的分布证实了尼罗-苏丹鱼类省的存在。在中新世早期，一条东西向的水道被证明穿越了非洲。乍得和东非地区的异域物种形成表明，该系统在 7 Ma 之前就发生了分裂。此外，我们的数据支持 7Ma 后，在米奥-上新世边界附近，乍得盆地和苏尔特盆地之间存在水文联系。最后，我们的研究还表明尼日尔盆地和乍得盆地之间的联系存在于中新世末期。
The Neogene African fossil record of two fishes, i.e. Semlikiichthys (Perciformes indet.) and Calarius (Siluriformes, Ariidae) is reviewed including new material from Chadian outcrops. Their distribution confirms the existence of a Nilo-Sudan ichthyological province. During an early part of the Miocene an east–west waterway is demonstrated to have crossed Africa. Allopatric speciation in the Chadian and East African areas suggests that a split occurred in this system prior to 7 Ma. Moreover, our data support the existence of hydrographical connections between the Chadian basin and the Syrte basin, after 7 Ma, at about the Mio-Pliocene boundary. Finally, our study also demonstrates that connections between the Niger and Chad basins existed at the very end of the Miocene.