Lineage of Arxina schwageri (Silvestri, 1928) new genus (Nummulitacea) from Middle Eocene of Egypt and Sultanate of Oman

Mohamed Boukhary; Aly I.M. Hussein; Abdul Razak Al-Sayigh

doi:10.1080/08912963.2011.651468

Lineage of Arxina schwageri (Silvestri, 1928) new genus (Nummulitacea) from Middle Eocene of Egypt and Sultanate of Oman

Mohamed Boukhary^*, Aly I.M. Hussein, Abdul Razak Al-Sayigh

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

6 Citations (Scopus)

Abstract

Four species, Arxina parva (Douville, 1930), Arxina cf. schwageri (Silvestri, 1928) A. schwageri (Silvestri, 1928) and Arxina sp. cf. alpina (Douville, 1916) assigned to the newly erected genus Arxina, are recorded from the Middle Eocene of Egypt and Sultanate of Oman. The phylogenetic trend of these species exhibits a progressive increase in the size, a flattening of the test and a general trend of the coalescence of granules which become smaller in size.

Original language	English
Pages (from-to)	547-556
Number of pages	10
Journal	Historical Biology
Volume	24
Issue number	5
DOIs	https://doi.org/10.1080/08912963.2011.651468
Publication status	Published - Oct 2012
Externally published	Yes

Keywords

Egypt
Middle Eocene
Nummulitidae
Sultanate of Oman
phylogenetic trends

ASJC Scopus subject areas

Agricultural and Biological Sciences(all)

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10.1080/08912963.2011.651468

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title = "Lineage of Arxina schwageri (Silvestri, 1928) new genus (Nummulitacea) from Middle Eocene of Egypt and Sultanate of Oman",

abstract = "Four species, Arxina parva (Douville, 1930), Arxina cf. schwageri (Silvestri, 1928) A. schwageri (Silvestri, 1928) and Arxina sp. cf. alpina (Douville, 1916) assigned to the newly erected genus Arxina, are recorded from the Middle Eocene of Egypt and Sultanate of Oman. The phylogenetic trend of these species exhibits a progressive increase in the size, a flattening of the test and a general trend of the coalescence of granules which become smaller in size.",

keywords = "Egypt, Middle Eocene, Nummulitidae, Sultanate of Oman, phylogenetic trends",

author = "Mohamed Boukhary and Hussein, {Aly I.M.} and Al-Sayigh, {Abdul Razak}",

year = "2012",

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pages = "547--556",

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AU - Boukhary, Mohamed

AU - Hussein, Aly I.M.

AU - Al-Sayigh, Abdul Razak

PY - 2012/10

Y1 - 2012/10

N2 - Four species, Arxina parva (Douville, 1930), Arxina cf. schwageri (Silvestri, 1928) A. schwageri (Silvestri, 1928) and Arxina sp. cf. alpina (Douville, 1916) assigned to the newly erected genus Arxina, are recorded from the Middle Eocene of Egypt and Sultanate of Oman. The phylogenetic trend of these species exhibits a progressive increase in the size, a flattening of the test and a general trend of the coalescence of granules which become smaller in size.

AB - Four species, Arxina parva (Douville, 1930), Arxina cf. schwageri (Silvestri, 1928) A. schwageri (Silvestri, 1928) and Arxina sp. cf. alpina (Douville, 1916) assigned to the newly erected genus Arxina, are recorded from the Middle Eocene of Egypt and Sultanate of Oman. The phylogenetic trend of these species exhibits a progressive increase in the size, a flattening of the test and a general trend of the coalescence of granules which become smaller in size.

KW - Egypt

KW - Middle Eocene

KW - Nummulitidae

KW - Sultanate of Oman

KW - phylogenetic trends

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JO - Historical Biology

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Lineage of Arxina schwageri (Silvestri, 1928) new genus (Nummulitacea) from Middle Eocene of Egypt and Sultanate of Oman

Abstract

Keywords

ASJC Scopus subject areas

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