Well samples, oriented thin sections, and microslides of Mesozoic and Cenozoic larger foraminifera. Foraminiferal assemblages from the Bifurcatus Zone (Oxfordian, Upper Jurassic) are studied in the Navalperal section (Betic Cordillera, southern Spain). Upper Cretaceous, Central Apennine, Italy. Thin section petrography is one of the key analytical tools in sedimentology. [18] The majority of planktonic foraminifera are found in the globigerinina, a lineage within the rotaliida. Packstone with Alveolinid from the Eocene of the Pyrenees. Foraminifera are found in all marine environments, they may be planktic or benthic in mode of life. Grain-supported, diagenetic texture due to compaction and pressure solution with partial grain suturing: some grain contacts are microstylolites; between grains there is micrite matrix. Condensed packstone with Spiroclypeus (right corner) and Lepidocyclina of late Oligocene to early Miocene age. Benthic foraminifera are abundant and diverse in most samples of Asmari Formation at the studied sections (Figs 3 and 4). While one can identify small benthic foraminifera from their external morphology, one must study thin sections to identify larger benthic foraminifera from their internal test architecture. 2. (centre), Spyroclypeus (centre top), Carpenteria and Discocyclina sp. Middle Permian Capitan Reef, New Mexico, USA. Skeletal grainstone with Alveolina of Thanetian p.p.-middle Eocene inner ramp and platform interior facies. discorbinus/striatus (A-form) with distinctive polar pillar from Oligocene strata, offshore India. Burdigalian Salammbo Formation Offshore Libya Porosity occluded by ferroan dolospar. Bioclastic grainstone consisting of rudist bivalve fragments and Orbitoides (rotalid foraminifera Orbitoidoidea) from Campanian-Maastrichtian ramp facies. A total of seventeen species of larger benthic foraminifera have been identified. Foraminifera Baculogypsina sphaerulata of Hatoma Island, Japan. 2 Thin section microphotographs illustrating the main foraminiferal representatives of Condensed grainstone with Heterostegina sp. Oriented thin sections of Mesozoic and early Cenozoic larger foraminifera mostly from North America. The original publications are available as pdfs through the Smithsonian Libraries. Bahamonde et al. A total of eleven species of larger benthic foraminifera were identified. Thin section stained with alizarin red showing a partly dolomitized (white unstained dolomite crystals) packstone with undolomitized crinoid fragments and a specimen of the textularids foraminifer Climacammina. Thin section stained with alizarin red showing a partly dolomitized (white unstained dolomite crystals) packstone with undolomitized crinoid fragments and a specimen of the textularids foraminifer Climacammina. Skeletal wackestone with a specimen of Nummulites (right), a possible Operculina (left), and a rotalid foraminifer (bottom centre) from a Thanetian p.p.-Oligocene p.p. Foraminifera: photo-gallery by genus, location and geological time, Database Query Scale bar 100 micrometres. Lower Permian, Karachaganak Field, Kazakhstan. Identified slides and sieved residues with Recent foraminifera from Pacific, Atlantic, and Indian Ocean dredges. Benthic foraminifera are typically found in fine-grained sediments, where they actively move between layers; however, many species are found on hard rock substrates, attached to seaweeds, or sitting atop the sediment surface. Cross-section of Alveolina from Eocene inner ramp facies, offshore India. Offshore Libya. Skeletal packstone with a specimen of Discocyclina sp. sp., is described from the Late Maastrichtian of the Tarbur Formation of the Zagros Zone, SW Iran. 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