Paleoenvironmental and paleobiogeographical significance of Paleocene – early Eocene ostracods in Wadi Tarfa, North Eastern Desert, Egypt
Abstract This study investigates ostracod faunas from the well-preserved Paleocene to lower Eocene sedimentary succession at Wadi Tarfa, North Eastern Desert, Egypt. A total of 22 species and subspecies across 16 genera and 8 families were identified across 57 samples. Three zones were identified: D...
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Nature Portfolio
2025-02-01
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| Online Access: | https://doi.org/10.1038/s41598-025-89560-6 |
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| author | Ahmed Samir El Sayed M. Moneer Islam El-Sheikh Youssef S. Bazeen |
| author_facet | Ahmed Samir El Sayed M. Moneer Islam El-Sheikh Youssef S. Bazeen |
| author_sort | Ahmed Samir |
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| description | Abstract This study investigates ostracod faunas from the well-preserved Paleocene to lower Eocene sedimentary succession at Wadi Tarfa, North Eastern Desert, Egypt. A total of 22 species and subspecies across 16 genera and 8 families were identified across 57 samples. Three zones were identified: Doricythereis jordanica jordanica Zone, Cytheropteron toshkaensis Zone, and Phalcocythere horraensis Zone, based on the stratigraphic distribution of ostracod fauna. However, correlations with other sections revealed inconsistencies in the first and last occurrences of ostracod species, indicating complexities in regional biostratigraphic correlation by ostracod fauna and the influence of localized depositional factors. Both R-mode and Q-mode clustering analyses were applied to ostracod assemblages, identifying four distinct faunal clusters and five biofacies, reflecting depositional changes from outer neritic to upper bathyal environments. The late Paleocene revealed reduced ostracod diversity, correlating with a deepening marine environment, particularly in the Tarawan Formation. Non-Metric Multidimensional Scaling (NMDS) analyses indicated significant paleobiogeographic connections between North African and Levantine sites, while faunal differentiation was greater in West African and Middle Eastern regions due to marine barriers. |
| format | Article |
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| institution | DOAJ |
| issn | 2045-2322 |
| language | English |
| publishDate | 2025-02-01 |
| publisher | Nature Portfolio |
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| spelling | doaj-art-e3c3c7fa1da94d039693fe4a568fd73c2025-08-20T03:04:38ZengNature PortfolioScientific Reports2045-23222025-02-0115111810.1038/s41598-025-89560-6Paleoenvironmental and paleobiogeographical significance of Paleocene – early Eocene ostracods in Wadi Tarfa, North Eastern Desert, EgyptAhmed Samir0El Sayed M. Moneer1Islam El-Sheikh2Youssef S. Bazeen3Geology Department, Faculty of Science, Al-Azhar UniversityGeology Department, Faculty of Science, Al-Azhar UniversityGeology Department, Faculty of Science, Al-Azhar University, Assiut BranchGeology Department, Faculty of Science, Al-Azhar UniversityAbstract This study investigates ostracod faunas from the well-preserved Paleocene to lower Eocene sedimentary succession at Wadi Tarfa, North Eastern Desert, Egypt. A total of 22 species and subspecies across 16 genera and 8 families were identified across 57 samples. Three zones were identified: Doricythereis jordanica jordanica Zone, Cytheropteron toshkaensis Zone, and Phalcocythere horraensis Zone, based on the stratigraphic distribution of ostracod fauna. However, correlations with other sections revealed inconsistencies in the first and last occurrences of ostracod species, indicating complexities in regional biostratigraphic correlation by ostracod fauna and the influence of localized depositional factors. Both R-mode and Q-mode clustering analyses were applied to ostracod assemblages, identifying four distinct faunal clusters and five biofacies, reflecting depositional changes from outer neritic to upper bathyal environments. The late Paleocene revealed reduced ostracod diversity, correlating with a deepening marine environment, particularly in the Tarawan Formation. Non-Metric Multidimensional Scaling (NMDS) analyses indicated significant paleobiogeographic connections between North African and Levantine sites, while faunal differentiation was greater in West African and Middle Eastern regions due to marine barriers.https://doi.org/10.1038/s41598-025-89560-6OstracodaPaleocene-early EoceneEastern DesertBiostratigraphyPaleobathymeteryTythian affinity |
| spellingShingle | Ahmed Samir El Sayed M. Moneer Islam El-Sheikh Youssef S. Bazeen Paleoenvironmental and paleobiogeographical significance of Paleocene – early Eocene ostracods in Wadi Tarfa, North Eastern Desert, Egypt Scientific Reports Ostracoda Paleocene-early Eocene Eastern Desert Biostratigraphy Paleobathymetery Tythian affinity |
| title | Paleoenvironmental and paleobiogeographical significance of Paleocene – early Eocene ostracods in Wadi Tarfa, North Eastern Desert, Egypt |
| title_full | Paleoenvironmental and paleobiogeographical significance of Paleocene – early Eocene ostracods in Wadi Tarfa, North Eastern Desert, Egypt |
| title_fullStr | Paleoenvironmental and paleobiogeographical significance of Paleocene – early Eocene ostracods in Wadi Tarfa, North Eastern Desert, Egypt |
| title_full_unstemmed | Paleoenvironmental and paleobiogeographical significance of Paleocene – early Eocene ostracods in Wadi Tarfa, North Eastern Desert, Egypt |
| title_short | Paleoenvironmental and paleobiogeographical significance of Paleocene – early Eocene ostracods in Wadi Tarfa, North Eastern Desert, Egypt |
| title_sort | paleoenvironmental and paleobiogeographical significance of paleocene early eocene ostracods in wadi tarfa north eastern desert egypt |
| topic | Ostracoda Paleocene-early Eocene Eastern Desert Biostratigraphy Paleobathymetery Tythian affinity |
| url | https://doi.org/10.1038/s41598-025-89560-6 |
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