Upper Cretaceous brown, zeolitic clays were penetrated in the northeast Indian Ocean at Site 260 in the Gascoyne Abyssal Plain and at Site 261 in the Argo Abyssal Plain. The sediments which are assumed to have been deposited below the lysocline, contain an assumedly autochthonous fauna of characteristic agglutinated foraminifera. The 21 genera distinguished are: Haplophragmoides,

Lower and Upper Cretaceous sediments of the Maurice Ewing Bank, Site 511 (black shales, mudstones, zeolitic clays, and nannofossil chalk and ooze, 361 m thick) are characterized by an assemblage of planktonic foraminifers of low systematic diversity, including over 50 species.

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