Eocene Larger Foraminifera Research Articles

Eocene larger foraminifera from Helwan, Greater Cairo, Egypt

The larger foraminifera of the Eocene succession exposed in Helwan area to the south of Cairo have been recorded and studied. The distribution of the different larger species yielded from the studied sections shows that it is possible to subdivide the stratigraphic sequence into four local biostratigraphic units from top to base as follows: Nummulites sp.gr. incrassatus De La Harpe , Nummulites sp. cf. beaumonti, Nummulites aff. pulchellus, Nummulites bullatus , and Nummulites bartovigatus, Dictyoconus egyptiensis Assemblage Zones. The identification of Nummulites gizehensis ( Forskal ), described from Helwan area is uncertain; it is identified as Nummulites bartovigatus Boukhary and Hussein n.sp. and also found in Abu Shama section which lies 30 km to the east of Helwan and it belongs to N. laevigatus group. It is worth mentioning that the biofacies yielded from Helwan resembles that recorded from the Eastern Desert facies during the Bartonian rather than that known from Gebel Mokattam. L'étude porte sur les grands Foraminifères de la série éocène d'Helwan, au Sud du Caire. La répartition des différents taxons montre qu'il est possible, à partir d'eux, de subdiviser localement l'ensemble de la série en quatre unités biostratigraphiques, à savoir, de haut en bas, la zone à Nummulites sp. gr incrassatus , la zone à N. sp. cf. beaumonti/ N. aff. pulchellus , la zone à N. bullatus zone et celle à N. bartovirgatus/Dictyoconus egyptiensis . La N gizehensis signalée à Elwan est en réalité une nouvelle espèce, Nummulites bartovigatus , appartenant au groupe laevigatus , également connue dans la coupe d'Abou Shama à 30 km à l'Est d'Helwan. Les biofaciès bartoniens d'Helwan sont plus proches de ceux du Désert de l'Est que de ceux du Gebel Mokattam.

On some Eocene larger foraminifera from Qatar, Arabian Gulf

On some Eocene larger foraminifera from Qatar, Arabian Gulf

Some American Fossil Foraminifera and Corals

UNDER the title “American Old and Middle Tamary Larger Foraminifera and Corals” (Get Soc. Amir., Mem. 9; 1945), Dr. Thomas land Vaughan and Dr. John West Wells have produced a notable contribution to sciepce. Part 1, “American Paleocene and Eocene Larger Foraminifera” (pp. x+175+46 plates) is by Dr. vaughan; Part 2, “West Indian Eocene and Miocene Corals” (pp. iii+25 + 3 plates), is by Dr. Wells. It is a far cry from the brief list of oraminiferal and coral species published by Matley in 1932 (Geol. Mag., 69) from the Scotland Beds of Barbados to this splendid double monograph by two well-known specialists on their respective groups.

American Old and Middle Tertiary Larger Foraminifera and Corals. Part I. American Paleocene and Eocene Larger Foraminifera.Thomas Wayland VaughanAmerican Old and Middle Tertiary Larger Foraminifera and Corals. Part II. West Indian Eocene and Miocene Corals.John West Wells

<i>American Old and Middle Tertiary Larger Foraminifera and Corals. Part I. American Paleocene and Eocene Larger Foraminifera.</i>Thomas Wayland Vaughan<i>American Old and Middle Tertiary Larger Foraminifera and Corals. Part II. West Indian Eocene and Miocene Corals.</i>John West Wells