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On the origin of Nummulites: Urnummulites schaubi n. gen. n.sp., from the Late Paleocene of Egypt | |
Boukhary, Mohamed1; Scheibner, Christian2 | |
通讯作者 | Boukhary, Mohamed |
来源期刊 | MICROPALEONTOLOGY
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ISSN | 0026-2803 |
出版年 | 2009 |
卷号 | 55期号:4页码:413-420 |
英文摘要 | Urmmulites schaubi n. gen. n. sp., is a rotaliid foraminifera. It is found for the first time in the Late Paleocene toe of slope sediments of a carbonate platform Stratigraphic section D6, Bir Dakhl, Southern Galala. Eastern Desert, Egypt. The form is believed to be the ancestor of Nummulites. It is distinguished from Kathina by having asymmetrical polar pustules on both sides. The pustule is only well pronounced ventrally, where it possesses perforations(punctuation) and is lacking the umbilical pillar found in Kathina. In the involute ventral side the test possesses "alar" prolongations. s. str., while these prolongations are lacking dorsally. The form also recalls Laffitteina (a Maastrichtian genus) but it lacks the double septa and the ramifying interseptal canals. Urmmulites differs from all the representatives of Rotaliidae by the presence of the septal filaments. The form is believed to be the ancestor of Nummulites. |
类型 | Article |
语种 | 英语 |
国家 | Egypt ; Germany |
收录类别 | SCI-E |
WOS记录号 | WOS:000268205400006 |
WOS关键词 | PLATFORM ; DESERT ; MARGIN ; BASIN |
WOS类目 | Paleontology |
WOS研究方向 | Paleontology |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/161945 |
作者单位 | 1.Ain Shams Univ, Fac Sci, Dept Geol, Cairo 11566, Egypt; 2.Univ Bremen, FB5, D-28334 Bremen, Germany |
推荐引用方式 GB/T 7714 | Boukhary, Mohamed,Scheibner, Christian. On the origin of Nummulites: Urnummulites schaubi n. gen. n.sp., from the Late Paleocene of Egypt[J],2009,55(4):413-420. |
APA | Boukhary, Mohamed,&Scheibner, Christian.(2009).On the origin of Nummulites: Urnummulites schaubi n. gen. n.sp., from the Late Paleocene of Egypt.MICROPALEONTOLOGY,55(4),413-420. |
MLA | Boukhary, Mohamed,et al."On the origin of Nummulites: Urnummulites schaubi n. gen. n.sp., from the Late Paleocene of Egypt".MICROPALEONTOLOGY 55.4(2009):413-420. |
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