Taxonomy of Middle Miocene foraminifera from the northern Namibian continental shelf Author Bergh, Eugene W. 0000-0002-0765-4141 Marine Research Institute and Department of Geological Sciences, University of Cape Town, Private Bag X 3, Rondebosch, 7701, South Africa. & Department of Environmental and Geographical Sciences, University of Cape Town, Private Bag X 3, Rondebosch, 7701, South Africa; & Invertebrate palaeontology and Geology, Iziko South African Museum, P. O. Box 61, Cape Town 8000, South Africa. john. compton @ uct. ac. za; https: // orcid. org / 0000 - 0002 - 0765 - 4141 john.compton@uct.ac.za Author Compton, John S. Marine Research Institute and Department of Geological Sciences, University of Cape Town, Private Bag X 3, Rondebosch, 7701, South Africa. text Zootaxa 2022 2022-01-12 5091 1 1 55 journal article 2636 10.11646/zootaxa.5091.1.1 51b42715-ddb1-4b4a-aad4-8be0f600a287 1175-5326 5840434 ABC8AF70-F691-4D07-8F20-70934642C8BC Praeorbulina curva ( Blow, 1956 ) Pl. 8, fig. 8 Globigerinoides glomerosa curva Blow, 1956 , p. 64 , text-fig. 1, 9–14. Praeorbulina glomerosa curva Bolli et al., 1985 , p. 199 , figs. 23.5, 24.6; Kennett & Srinivasan, 1985, p. 82, pl. 18, figs. 3-4. Description : The test surface is cancellate-spinose. The test is trochospiral, globular and semi-circular or subspheroidal in cross section. The final chamber envelops earlier chambers. The proportion of the enveloping chamber is variable, with 40 to 70% of the test that can be covered. Apertures form slits along the margins of the ultimate, penultimate and earlier chambers. Numerous narrow slit-like apertures can cover the test along the sutures. The sutures become more incised in the later chambers. Remarks: This species occurs in minor abundances in the cores. The tests are moderate in size, measuring up to 0.4 mm in diameter. Environmental preferences: Praeorbulina curva is considered to be a temperate to warm water tropical species ( Kennett & Srinivasan, 1983 ). Global stratigraphic range : This species has been recorded to occur from the early (Burdigalian) to middle Miocene – Langhian ( Kennett & Srinivasan, 1983 ; Wade et al., 2011 ). Regional occurrence: Praeorbulina curva is documented to occur in middle Miocene-aged sediments of the northern Namibian continental shelf, south of the Kunene River mouth (this study) .