FIGURE 1. Location of studied well (modified after Odemerho; Urhobo Historical Society, 2008).

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FIGURE 2. Lithostratigraphic section of Well 5 OML 34.

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FIGURE 3. Ranges of Planktonic foraminifera showing Biozones for the studied Well 5.

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FIGURE 4. Sequence stratigraphy chart showing paleobathymetry of deposition of studied well.

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FIGURE 5. Triangular plot of shell-type ratio, showing portion of intersection as normal marine shelf sea environment (modified after Murray, 1973).

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FIGURE 6. Photomicrographic plate of some foraminfera specie from the studied well. 1, Bolivina dilatata, (Reuss) X 100; 2-3, Ammonia beccarii (Linne), (2)Dorsal view X 200, (3) Ventral view X 200; 4, Uvigerina sp. (Cushman) X 150; 5, Hopkinsina bononiensis, (Fornasini) X 150; 6-8, Epistominella vitrea (Parker), (6) Dorsal viewX 200, (7) Edge view X 200, (8) Ventral view X 200; 9, Orbulina universa, (d’Orbigny) X 250; 10, Brizalina interjuncta, (Graham, De Klasz and Rerat) X 150; 11, Heterolepa floridana, (Cushman) X 200; 12, Orbulina suturalis, (Bronnimann) X 250; 13, Praeorbulina glomerosa, (Blow) X 200; 14, Praeorbulina sicana, (Cushman and Stainforth) X 200; 15, Uvigerina isidroensis, (Cushman and Renz) X 150; 16-17, Cibicorbis inflata, (d’Orbigny), (16) Dorsal view X 200, (17) Ventral view X 200; 18, Hanzawaia strattonii, (Applin) X 200; 19-20, Valvulineria gasperensis, (Bermudez) (19) Dorsal view X 200, (20) Ventral view X 200; 21, Lenticulina grandis, (Cushman) X 200; 22, Textularia laminata, (Cushman) X 100; 23, Brizalina mandoroviensis, (Graham) X 100; 24-25, Globorotalia mayeri, (Cushman and Ellisor) (24) Dorsal view X 200, (25) Ventral view X 200.

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