ABSTRACT The taxonomy, biostratigraphy, distribution, paleoecology and phylogenetic systematics of Oligocene planktonic foraminifera are treated in an illustrated atlas format. One hundred and twenty-eight species are recognized, including three species of Catapsydrax , eight species of Globorotaloides , two species of Protentelloides , twelve species of Paragloborotalia , two species of Parasubbotina , three species of Globigerina , eight species of Globigerinella , two species of Quiltyella Coxall and Spezzaferri n. gen., four species of Ciperoella Olsson and Hemleben n. gen., fifteen species of Globoturborotalita , seven species of Globigerinoides , seven species of Trilobatus , nine species of Subbotina , sixteen species of Dentoglobigerina , one species of Globoquadrina , two species of Turborotalita , three species of Acarinina , two species of Pseudohastigerina , two species of Turborotalia , two species of Dipsidripella , two species of Globigerinita , four species of Tenuitella , four species of Chiloguembelina , two species of Jenkinsina , two species of Cassigerinella , and four species of Streptochilus . We name fourteen new species: Chiloguembelina adriatica Premec Fucek, Hernitz Kucenjak and Huber n. sp., Chiloguembelina andreae Premec Fucek, Hernitz Kucenjak and Huber n. sp., Dentoglobigerina eotripartita Pearson, Wade and Olsson n. sp., Globigerina archaeobulloides Hemleben and Olsson n. sp., Globigerinella roeglina Spezzaferri and Coxall n. sp., Globigerinoides neoparawoodi Spezzaferri n. sp., Globigerinoides joli Spezzaferri n. sp., Globoturborotalita eolabiacrassata Spezzaferri and Coxall n. sp., Globoturborotalita paracancellata Olsson and Hemleben n. sp., Globoturborotalita pseudopraebulloides Olsson and Hemleben n. sp., Globorotaloides atlanticus Spezzaferri and Coxall n. sp., Subbotina projecta Olsson, Pearson, and Wade n. sp., Streptochilus tasmanensis Smart and Thomas n. sp. and Trilobatus altospiralis Spezzaferri n. sp. The following new genera are named: Ciperoella Olsson and Hemleben n. gen. and Quiltyella Coxall and Spezzaferri, n. gen. Over 2000 scanning electron micrographs images, including the type specimens of more than 60 species are illustrated for the first time, providing fresh comprehension of the shell architecture and wall texture, particularly for species that were poorly illustrated when first described. The biostratigraphic occurrences and phylogenetic relationships of all species of Oligocene planktonic foraminifera are reviewed. Analysis of wall textures, based on well-preserved material (much of which is illustrated for the first time) provides the basis for the higher taxonomy. Accordingly, Oligocene normal perforate planktonic foraminifera are divided into the Families Globigerinidae, Truncorotaloididae, and Globanomalinidae. Oligocene microperforate species, are placed in the Families Globigerinitidae, Chiloguembelinidae, Guembelitriidae, and Cassigerinellidae.

Abstract Currently, large-scale commercial in-situ recovery of bitumen from oil sands reservoirs is done by thermal gravity drainage oil sands recovery processes such as cyclic steam stimulation (CSS) and steam-assisted gravity drainage (SAGD). In these processes, steam is injected into the formation, which then heats bitumen until it is sufficiently mobile enough to be moved to the production well. The key goal of these processes is controlled and targeted steam delivery, really heat delivery, to the reservoir, and thus, both heat transfer and consequent bitumen mobilization are key controls on the performance of the processes. Here, we describe conductive and convective heat transfer at the edge of steam chambers and oil mobilization just beyond the edge of the chamber. The results demonstrate the complex interplay between heat transfer and oil mobilization: heat transfer controls the temperature profile beyond the edge of the steam chamber, which sets the oil viscosity profile, which in turn controls bitumen mobilization. Relative permeability, geomechanics, and geologic heterogeneity make the phenomena more complex. The discussion suggests that self-corrective robust recovery processes or dynamic well interventions such as smart wells that yield uniform steam chambers are required to ensure efficient heat transfer and oil mobilization.