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首页> 外文期刊>Stratigraphy >Globorotalia mariae mariae and G. mariae gratiae: Two new planktonic Foraminifera from the Middle Miocene of the Mediterranean
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Globorotalia mariae mariae and G. mariae gratiae: Two new planktonic Foraminifera from the Middle Miocene of the Mediterranean

机译：Cassigerinella和Maria G. Maria感谢：来自地中海中新世的两个新浮游有孔虫

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摘要

Two new subspecies belonging to the genus Globorotalia, that we name G. mariae mariae and G. mariae gratiae, are here described and figured. They were found exclusively within the Middle Miocene and particularly from the early Langhian to the Serravallian of several Mediterranean sedimentary successions. The two subspecies have a slightly different stratigraphic range. Both were recorded from the Globigerinoides sicanus/Orbulina suturalis Zone (MMi4) to the Paragloborotalia partimlabiata Zone (MMi7). However, only G. mariae marine is recorded from the Globorotalia praescitula Subzone (MMi4b), whereas G. mariae gratiae was found from slightly younger levels, corresponding to the Paragloborotalia siakensis-Praeorbulina glomerosa circularis Subzone (MMi4c). As far as their origin concerns, G. praescitula may have been the ancestor of G. mariae mariae. Subsequently, G. mariae gratiae evolved from G. mariae mariae. Both subspecies disappear in the Paragloborotalia partimlabiata-Glohoturborotalita druryi Subzone (MMi7a). Concerning their stratigraphic range it is important to point out that in all the studied sections both subspecies were not found in the interval encompassing the Langhian/Serravallian boundary, and lasting from the upper part of the Praeorbulina glomerosa circularis Subzone (MMi4d) to the uppermost part of the Orbulina suturalis/Globorotalia peripheroronda Zone (MMi5).
机译：在此描述并标出了属于球孢白粉菌属的两个新亚种，我们将其命名为G. mariae mariae和G. mariae gratiae。它们仅在中新世中期被发现，尤其是在几个地中海沉积层序的朗吉安至塞拉瓦利亚。这两个亚种的地层范围略有不同。两者均记录自西格罗比热里诺斯/苏氏球藻地带（MMi4）到旁白粉刺区（MMi7）。然而，仅从海洋伯氏菌亚区域（MMi4b）记录到海洋海洋弧菌，而从更年轻的水平上发现了海洋土壤弧菌，对应于副球藻siakensis-Praeorbulina glomerosacircisis亚区域（MMi4c）。就其起源而言，普雷希氏菌可能是玛丽氏菌的祖先。随后，G。mariae gratiae从G. mariae mariae进化而来。这两个亚种都消失在部分副伞菌-Glohoturborotalita druryi子区（MMi7a）中。关于它们的地层范围，重要的是要指出，在所有研究的断面中都没有发现两个亚种，包括朗格/塞拉瓦利边界，并从Praeorbulina glomerosa circleis Subzone（MMi4d）的上部持续的Orbulina suturalis / Globorotalia peripheroronda区（MMi5）。

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