ASAN, A., SALAME, I., STROUGO, A. (2022). SHARKS AND RAYS FROM THE MOKATTAMIAN STAGE (MIDDLE AND LATE EOCENE) OF EGYPT, INCLUDING SOME SPECIES FROM THE MIDDLE EOCENE MIDRA SHALE OF QATAR. test, 66(1), 113-161. doi: 10.21608/egjg.2022.173845.1028
Anhar ASAN; Iman SALAME; Amin STROUGO. "SHARKS AND RAYS FROM THE MOKATTAMIAN STAGE (MIDDLE AND LATE EOCENE) OF EGYPT, INCLUDING SOME SPECIES FROM THE MIDDLE EOCENE MIDRA SHALE OF QATAR". test, 66, 1, 2022, 113-161. doi: 10.21608/egjg.2022.173845.1028
ASAN, A., SALAME, I., STROUGO, A. (2022). 'SHARKS AND RAYS FROM THE MOKATTAMIAN STAGE (MIDDLE AND LATE EOCENE) OF EGYPT, INCLUDING SOME SPECIES FROM THE MIDDLE EOCENE MIDRA SHALE OF QATAR', test, 66(1), pp. 113-161. doi: 10.21608/egjg.2022.173845.1028
ASAN, A., SALAME, I., STROUGO, A. SHARKS AND RAYS FROM THE MOKATTAMIAN STAGE (MIDDLE AND LATE EOCENE) OF EGYPT, INCLUDING SOME SPECIES FROM THE MIDDLE EOCENE MIDRA SHALE OF QATAR. test, 2022; 66(1): 113-161. doi: 10.21608/egjg.2022.173845.1028

SHARKS AND RAYS FROM THE MOKATTAMIAN STAGE (MIDDLE AND LATE EOCENE) OF EGYPT, INCLUDING SOME SPECIES FROM THE MIDDLE EOCENE MIDRA SHALE OF QATAR

Egyptian Journal of Geology
Volume 66, Issue 1, 2022, Pages 113-161    PDF (2.14 M)
Document Type: Original Article
DOI: 10.21608/egjg.2022.173845.1028
Authors
Anhar ASAN* 1; Iman SALAME2; Amin STROUGO3
1Geology department Ain Shams University Faculty of Science
2Geology department, Faculty of Science, Ain Shams University
3Geology department, Faculty of Science Ain Shams University
Abstract
Twenty six species of “megascopic” elasmobranchs have been identified, described and figured, and a local biostratigraphic scheme has been constructed. Ginglymostoma angolense Dartevelle & Casier, 1943 is reported for the first time from the Egyp‌tian Eocene. The average size of Misrichthys stromeri Case & Cappetta, 1990 seems to be age dependent, younger popula‌tions generally being larger in size. If this trend is confirmed by future studies, it may be used to separate specifically older populations from younger ones. Several species appear to be characteristic of specific horizons and, hence, could be used in the future for regional biostratigraphic correlation.

Ginglymostoma angolense Dartevelle & Casier, 1943, «Carcharias» koerti (Stromer, 1910), Moerigaleus vitreodon Under‌wood &Ward, 2011, Rhizoprionodon sp. and Anoxypristis mucrodens (White, 1926) are reported for the first time from the middle Eocene of Qatar.
Keywords
Mokattamian; Eocene; elasmobranchs; Egypt; Qatar
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