TABLE 1. The planktonic foraminifera species recorded from the studied Eocene sections.
| Planktonic foraminifera species | El Fashn Formation | Beni Suef Formation |
| Catapsydrax cryptomphala (Glaessner, 1937) | ـــ | x |
| Catapsydrax dissimilis (Cushman and Bermudez, 1937) | x | ـــ |
| Catapsydrax howei (Blow and Banner, 1962) | x | ـــ |
| Catapsydrax unicavus (Bolli, Loeblich and Tappan 1957) | ـــ | x |
| Globorotaloides suteri Bolli, 1957a | x | ـــ |
| Paragloborotalia nana Bolli, 1957a | x | x |
| Paragloborotalia opima Bolli, 1957a | x | x |
| Parasubbotina inaequispira (Subbotina, 1953) | x | ـــ |
| Tenuitella angustiumbilicata Bolli, 1957 | x | x |
| Globoturborotalita euapertura Jenkins 1960 | x | x |
| Globigerina turgida Finlay, 1939 | x | x |
| Globoturborotalita barbula Pearson and Wade 2015 | ـــ | x |
| Globoturborotalita martini (Blow and Banner, 1962) | x | x |
| Globoturborotalita gnauki (Blow and Banner, 1962) | x | x |
| Globoturborotalita ouachitaensis (Howe and Wallace, 1932) | x | x |
| Globoturborotalita occlusa (Blow and Banner, 1962) | x | x |
| Globoturborotalita praebulloides (Blow, 1959) | x | x |
| Subbotina angiporoides (Hornibrook, 1965) | x | x |
| Subbotina minima (Jenkins, 1966) | x | x |
| Subbotina corpulenta (Subbotina, 1953) | x | x |
| Subbotina eocaena (Guembel, 1868) | x | x |
| Subbotina hagni (Gohrbandt, 1967) | x | x |
| Subbotina linaperta (Finlay, 1939) | x | x |
| Subbotina praeturritilina (Blow and Banner, 1962) | x | x |
| Subbotina tecta Pearson and Wade, 2015 | ـــ | x |
| Subbotina senni (Beckmann, 1953) | x | ـــ |
| Subbotina utilisindex (Jenkins and Orr, 1973) | x | x |
| Subbotina yeguaensis (Weinzierl and Applin, 1929) | x | x |
| Turborotalita carcoselleensis (Toumarkine and Bolli, 1975) | x | ـــ |
| Globigerinatheka rubriformis (Subbotina, 1953) | x | x |
| Globigerinatheka tropicalis (Blow and Banner, 1962) | x | x |
| Globigerinatheka kugleri Globigerinatheka kugleri (Bolli, Loeblich and Tappan 1957) | x | x |
| Globigerinatheka Mexicana (Cushman, 1925) | x | x |
| Globigerinatheka semiinvoluta (Keijzer, 1945) | ـــ | x |
| Acarinina bullbrooki (Bolli, 1957) | x | ـــ |
| Acarinina collactea (Finlay, 1939) | x | ـــ |
| Acarinina libyaensis (El Khoudary, 1977) | x | ـــ |
| Acarinina matthewsae Blow, 1979 | x | ـــ |
| Acarinina medizzai (Toumarkine and Bolli, 1975) | x | ـــ |
| Acarinina pentacamerata (Subbotina, 1947) | x | ـــ |
| Acarinina primitiva (Finlay, 1947) | x | ـــ |
| Acarinina rohri (Bronnimann and Bermudez, 1953) | x | ـــ |
| Acarinina spinuloinflata (Bandy, 1949) | x | ـــ |
| Acarinina topilensis (Cushman, 1925) | x | ـــ |
| Morozovelloides lehneri (Cushman and Jarvis 1929) | x | ـــ |
| Morozovelloides crassatus (Cushman, 1925) | x | ـــ |
| Astrorotalia palmerae (Cushman and Bermudez 1937) | ـــ | x |
| Igorina broedermanni (Cushman and Bermudez 1937) | x | ـــ |
| Dentoglobigerina galavisi (Bermudez, 1961) | x | ـــ |
| Dentoglobigerina pseudovenezuelana (Blow and Banner, 1962) | x | x |
| Dentoglobigerina tripartite (Koch, 1926) | x | x |
| Dentoglobigerina venezuelana (Hedberg, 1937) | x | x |
| Pseudohastigerina danvillensis (Howe and Wallace, 1932) | x | x |
| Pseudohastigerina micra (Cole, 1927) | x | x |
| Pseudohastigerina naguewichiensis (Myatliuk, 1950) | x | x |
| Turborotalia ampliapertura (Bolli, 1957) | x | x |
| Turborotalia cf. ampliapertura (Bolli 1975) | x | x |
| Turborotalia centralis (Cushman and Bermudez, 1937) | x | x |
| Turborotalia cerroazulensis (Cole, 1928) | x | x |
| Turborotalia cocoaensis (Cushman, 1928) | ـــ | x |
| Turborotalia cunialensis (Toumarkine and Bolli, 1970) | ـــ | x |
| Turborotalia pomeroli (Toumarkine and Bolli, 1970) | x | x |
| Turborotalia increbescens (Bandy, 1949) | x | x |
| Guembelitria oveyi Ansary 1955 | x | ـــ |
| Chiloguembelina cubensis (Palmer, 1934) | x | x |
| Chiloguembelina ototara (Finlay, 1940) | x | x |
| Tenuitella gemma (Jenkins, 1966) | x | |
| Globigerinita africana Blow and Banner, 1962 | x | x |
| Globigerinita echinata (Bolli, 1957b) | x | x |
| Globigerinita pera (Todd, 1957) | x | ـــ |
