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Hayward, B.W., Kawagata, S., Sabaa, A.T., Grenfell, H.R., van Kerckhoven, L., Johnson, K., and Thomas, E., 2012. The last global extinction (Mid-Pleistocene) of deep-sea benthic foraminifera (Chrysalogoniidae, Ellipsoidinidae, Glandulonodosariidae, Plectofrondiculariidae, Pleursostomellidae, Stilostomellidae), their Late Cretaceous-Cenozoic history and taxonomy: Cushman Foundation for Foraminiferal Research Special Publication, v. 43, pl. 39, figs 9-10.
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Hayward, B.W., Kawagata, S., Sabaa, A.T., Grenfell, H.R., van Kerckhoven, L., Johnson, K., and Thomas, E., 2012. The last global extinction (Mid-Pleistocene) of deep-sea benthic foraminifera (Chrysalogoniidae, Ellipsoidinidae, Glandulonodosariidae, Plectofrondiculariidae, Pleursostomellidae, Stilostomellidae), their Late Cretaceous-Cenozoic history and taxonomy: Cushman Foundation for Foraminiferal Research Special Publication, v. 43, pl. 36, fig 11. North Atlantic, early Pleistocene.
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Hayward, B.W., Kawagata, S., Sabaa, A.T., Grenfell, H.R., van Kerckhoven, L., Johnson, K., and Thomas, E., 2012. The last global extinction (Mid-Pleistocene) of deep-sea benthic foraminifera (Chrysalogoniidae, Ellipsoidinidae, Glandulonodosariidae, Plectofrondiculariidae, Pleursostomellidae, Stilostomellidae), their Late Cretaceous-Cenozoic history and taxonomy: Cushman Foundation for Foraminiferal Research Special Publication, v. 43, pl. 36, fig 12. North Atlantic, early Pleistocene.
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Hayward, B.W., Kawagata, S., Sabaa, A.T., Grenfell, H.R., van Kerckhoven, L., Johnson, K., and Thomas, E., 2012. The last global extinction (Mid-Pleistocene) of deep-sea benthic foraminifera (Chrysalogoniidae, Ellipsoidinidae, Glandulonodosariidae, Plectofrondiculariidae, Pleursostomellidae, Stilostomellidae), their Late Cretaceous-Cenozoic history and taxonomy: Cushman Foundation for Foraminiferal Research Special Publication, v. 43, pl. 36, figs 13-14. Caribbean Sea, early Pleistocene.
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Gawor-Biedowa, E. (1987). New benthic foraminifers from the Late Cretaceous of Poland. Acta Palaeontologica Polonica. 32 (1-2): 49-71., available online at (https://www.app.pan.pl/archive/published/app32/app32-049.pdf) page(s): p. 60, pl. 23: 7; pl. 24: 4; pl. 26: 5 (holotype pl. 24 fig. 4).
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Gawor-Biedowa, E. (1987). New benthic foraminifers from the Late Cretaceous of Poland. Acta Palaeontologica Polonica. 32 (1-2): 49-71., available online at (https://www.app.pan.pl/archive/published/app32/app32-049.pdf) page(s): p. 61, pl. 27: 3a, b (holotype).
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Gawor-Biedowa, E. (1987). New benthic foraminifers from the Late Cretaceous of Poland. Acta Palaeontologica Polonica. 32 (1-2): 49-71., available online at (https://www.app.pan.pl/archive/published/app32/app32-049.pdf) page(s): p. 62, pl. 27: 4a, b (holotype).