Arid
DOI10.1016/j.pgeola.2018.08.006
A new record and a new ichnospecies of Arachnostega from the Middle Miocene of Egypt
Vinn, Olev1; El-Sabbagh, Ahmed M.2; El-Hedeny, Magdy M.2; Rashwan, Mohamed A.3; Al Farraj, Saleh A.4
通讯作者El-Hedeny, Magdy M.
来源期刊PROCEEDINGS OF THE GEOLOGISTS ASSOCIATION
ISSN0016-7878
出版年2018
卷号129期号:6页码:790-796
英文摘要

The ichnogenus Arachnostega Bertling, 1992 is recorded for the first time from a bioeroded, coral-rich, Middle Miocene limestone bed in the middle Siwa Escarpment Member (Marmarica Formation) at Siwa Oasis, northern Western Desert of Egypt. These burrowing traces are preserved on the surface of a few internal moulds of bivalves and gastropods. Until now, the ichnogenus Arachnostega included a single ichnospecies, A. gastrochaenae Bertling, 1992. In the material studied herein, two ichnospecies are identified, described, illustrated and compared with other, similar traces. One of these is a new ichnospecies of Arachnostega; this is here named A. siwaensis ichnosp. nov. It is distinguished from A. gastrochaenae in the possession of tunnels that usually branch in a V-pattern; intervals of ramification are longest in the main branch and decrease in second- and third-order branches. Arachnostega traces were produced in a warm, low-energy, shallow-marine (<10 m water depth) environment. Polychaetes are the most likely producers of marine Arachnostega, which are commonly occurred in the same studied bed. This new occurrence is significant in extending the known stratigraphical and geographical ranges of Arachnostega into the Middle Miocene of Egypt. (C) 2018 The Geologists’ Association. Published by Elsevier Ltd. All rights reserved.


英文关键词Burrows New ichnospecies Cenozoic North Africa
类型Article
语种英语
国家Estonia ; Egypt ; Saudi Arabia
收录类别SCI-E
WOS记录号WOS:000454380500007
WOS关键词WESTERN DESERT ; SIWA OASIS ; PALEOECOLOGY ; REEFS ; SUCCESSION ; GROWTH
WOS类目Geology ; Paleontology
WOS研究方向Geology ; Paleontology
来源机构King Saud University
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/212366
作者单位1.Univ Tartu, Dept Geol, Ravila 14A, EE-50411 Tartu, Estonia;
2.Alexandria Univ, Fac Sci, Dept Geol, Alexandria 21568, Egypt;
3.Alexandria Univ, Fac Educ, Dept Biol & Geol Sci, Alexandria 14037, Egypt;
4.King Saud Univ, Coll Sci, Riyadh, Saudi Arabia
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GB/T 7714
Vinn, Olev,El-Sabbagh, Ahmed M.,El-Hedeny, Magdy M.,et al. A new record and a new ichnospecies of Arachnostega from the Middle Miocene of Egypt[J]. King Saud University,2018,129(6):790-796.
APA Vinn, Olev,El-Sabbagh, Ahmed M.,El-Hedeny, Magdy M.,Rashwan, Mohamed A.,&Al Farraj, Saleh A..(2018).A new record and a new ichnospecies of Arachnostega from the Middle Miocene of Egypt.PROCEEDINGS OF THE GEOLOGISTS ASSOCIATION,129(6),790-796.
MLA Vinn, Olev,et al."A new record and a new ichnospecies of Arachnostega from the Middle Miocene of Egypt".PROCEEDINGS OF THE GEOLOGISTS ASSOCIATION 129.6(2018):790-796.
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