New Paleocene large cassiduline foraminifera (Cassidinidae fam. nov., Miscellanacea) from Egypt and its phylogeny |
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Authors: | Mohamed Boukhary Christian Scheibner |
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Institution: | 1. Department of Geology , Faculty of Science, Ain Shams University , 11566, Cairo, Egypt moboukhary@yahoo.com;3. University of Bremen , FB5, Geowissenschaften, Postfach 330440, D 28334, Bremen, Germany |
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Abstract: | Larger foraminifera of the Late Paleocene–Early Eocene lower slope to toe-of-slope deposits of the southern Galala, Egypt, are described. Sulcocassidina nakkadyi n. gen. et sp. (base) and Vacuolicassidella dakhlensis n. gen. et sp. (top) represent a phylogenetic line related to the family Cassidinidae (new family), superfamily Miscellanacea (new superfamily) in the latest Paleocene (shallow benthic zone 4) of the southern Galala, Egypt. In addition, Oscucassidella cassis n. gen. et sp., Pellatispiroides youssefi n. gen. et sp. and Chordcassidella ainshamsiana n. gen. et sp. are described and illustrated. Genus: Pomerolina n. gen. (Type species: Alveolina meandrina Carter, 1861, is newly erected and it belongs to Cassidinidae. In this family, the chambers are initially arranged streptospirally, whereas in later stages they are planispirally enrolled. Lateral chamberlets (retral process) are separated from the laminae by a passage and a marginal crest is added during growth. |
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Keywords: | larger foraminifera Cassidinidae (new family) Miscellanacea Paleocene Southern Galala Egypt |
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