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Loeblich, A. R., Tappan, H. N., 1987: Foraminiferal genera and their classification. Van Nostrand, Reinhold Co. New York 1728 pp. Plate 254, Figs. 1-2: U. Carboniferous (Namurian), USA. 1, Morrowan, Kearny Formation, Kearny County, Kansas, sagittal section, x 75 (from Thompson, 1944); 2, Morrowan, Marble Falls Limestone, Marble Falls, Texas, axial section of holotype, x 100 (from Thompson, 1942). courtesy of Michael Hesemann https://foraminifera.eu
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Loeblich, A. R., Tappan, H. N., 1987: Foraminiferal genera and their classification. Van Nostrand, Reinhold Co. New York 1728 pp. Plate 246, Figs. 15-17: L. Carboniferous (Tournaisian), Okayama Prefecture, Japan. 15, Equatorial section, x 100; 16, axial section, x 100; 17, equatorial section of holotype, x 100 (from Okimura, 1958). courtesy of Michael Hesemann https://foraminifera.eu
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Loeblich, A. R., Tappan, H. N., 1987: Foraminiferal genera and their classification. Van Nostrand, Reinhold Co. New York 1728 pp. Plate 262 figs. 3-10: U. Perrnian (Kazanian), Djebel es Souinia, S. Tunisia. 3, Axial section show?ing juvenarium of three and a half whorls in sagittal section, x 20; 4, axial section of lectotype, x 20; 5, axial section with juvenarium in sagittal section, x 20; 6, exterior, x 10; 7, tangential section parallel to axis, x 20; 8, small part of same enlarged to show keriothecal wall, x 130; 9, 10, centered sagittal section, x 20, and part enlarged to show wall, X 150 (from Ciry, 1948).
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Loeblich, A. R., Tappan, H. N., 1987: Foraminiferal genera and their classification. Van Nostrand, Reinhold Co. New York 1728 pp. Plate 221, Fig. 10: U. Devonian (Frasnian), Saratov Oblast, Russian Platform. Holotype, x 120 (from E. V. Bykova, 1952). courtesy of Michael Hesemann https://foraminifera.eu
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Zhuang, S. (1989). A study on stalactotheca in spirotheca of Fusulinids and some new genera and species with stalactotheca. ??????? - Acta Micropalaeontologica Sinica. 6(4): 357-371. page(s): p. 363 (Chinese), p. 369 (English), pl. 3, figs 5, 7-10, pl. 4, figs. 1-2 (holotype fig. 7a).
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Loeblich, A. R., Tappan, H. N., 1987: Foraminiferal genera and their classification. Van Nostrand, Reinhold Co. New York 1728 pp. Plate 230, Figs. 9-10: U. Permian (Djulfian), Transcaucasus. 9, Paratype showing well-developed interseptal chamberlets, x 45; 10, holotype, almost centered section, x 45 (from Reytlinger, 1965). courtesy of Michael Hesemann https://foraminifera.eu
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Loeblich, A. R., Tappan, H. N., 1987: Foraminiferal genera and their classification. Van Nostrand, Reinhold Co. New York 1728 pp. Plate 236, Fig. 8: L. Carboniferous (L. Visean), Dnieper-Donets Basin. Median section, x 55 (from Vdovenko, 1967). courtesy of Michael Hesemann https://foraminifera.eu
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Loeblich, A. R., Tappan, H. N., 1987: Foraminiferal genera and their classification. Van Nostrand, Reinhold Co. New York 1728 pp. Plate 243, Figs. 1-4: L. Carboniferous (M. Tournaisian), S. Urals. 1, Axial section, x 40; 2, equatorial section, x 40; 3, 4, face and side views, x 30 (from Rauzer-Chernousova and Fursenko, 1959). courtesy of Michael Hesemann https://foraminifera.eu
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Möller, V. von. (1878). Die Spiral-gewundenen Foraminiferen des russischen Kohlenkalks. Mémoires de l'Académie impériale des sciences de St.-Pétersbourg. ser. 7 vol. 25 n° 9., available online at (http://www.biodiversitylibrary.org/item/177334#page/737/) page(s): p. 83 pl. 3 fig. 4
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Möller, V. von. (1878). Die Spiral-gewundenen Foraminiferen des russischen Kohlenkalks. Mémoires de l'Académie impériale des sciences de St.-Pétersbourg. ser. 7 vol. 25 n° 9., available online at (http://www.biodiversitylibrary.org/item/177334#page/737/) page(s): p. 83 pl. 10 fig. 3
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Thompson, M. L. (1942). New genera of Pennsylvanian fusulinids. American Journal of Science. 240(6): 403-420., available online at (https://doi.org/10.2475/ajs.240.6.403) page(s): p. 411 pl. 3 figs. 10-14 Lectotype: pl. 3 fig. 13 designated by Thompson (1948)
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Thompson, M. L. (1942). New genera of Pennsylvanian fusulinids. American Journal of Science. 240(6): 403-420., available online at (https://doi.org/10.2475/ajs.240.6.403) page(s): p. 411 pl. 1 figs 15-20
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Loeblich, A. R., Tappan, H. N., 1987: Foraminiferal genera and their classification. Van Nostrand, Reinhold Co. New York 1728 pp. Plate 286, Figs. 4-6: L. Permian (Asselian), Samegai Formation, Shiga Prefecture, Honshu, Japan. 4, 5, Axial sections of topotypes, x 40; 6, sagittal section, x 40 (from Skinner and Wilde, 1965).
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Loeblich, A. R., Tappan, H. N., 1987: Foraminiferal genera and their classification. Van Nostrand, Reinhold Co. New York 1728 pp. Plate 253, Fig. 18: U. Permian (Murgabian), Primorye, central Asiatic USSR. Axial section of holotype, x 50 (from A. D. Miklukho-Maklay, 1959). courtesy of Michael Hesemann https://foraminifera.eu
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Toriyama, R. (1953). New peculiar fusulinid genus from the Akiyoshi Limestone of Southwest Japan. Journal of Paleontology. 27(2): 251-256. page(s): p. 253 pl. 35 figs. 1 (holotype)-9
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Loeblich, A. R., Tappan, H. N., 1987: Foraminiferal genera and their classification. Van Nostrand, Reinhold Co. New York 1728 pp. Plate 299, Figs. 10-11: M. Permian (Akasakan), Akasaka Limestone, Akasaka, Japan. 10, sagittal section of topotype, x 20; 11, axial section of topotype, x 20 (from Thompson, 1948). courtesy of Michael Hesemann https://foraminifera.eu
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Cushman, J. A.; Stainbrook, M. A. (1943). Some Foraminifera from the Devonian of Iowa. Contributions from the Cushman Laboratory for Foraminiferal Research. 19(4): 73-79., available online at (https://cushmanfoundation.allenpress.com/Portals/_default/files/pubarchive/cclfr/19cclfr4.pdf) page(s): p. 78 pl. 13 fig. 35 (holotype), 36-37
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Miklukho-Maklay, A. D. (1960). ????? ???????????????????? ?????????? / ????? ???? ??????? ???????? ? ?????????????? ???? - New Early Carboniferous Endotyrids / New species of ancient plants and invertebrates of the USSR. ??????????????? - Gosgeoltekhizdat. 1: 140-151., available online at (http://paleostratmuseum.ru/files/Mikluho1960.pdf) page(s): p. 151, pl. 25, fig. 6
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Loeblich, A. R., Tappan, H. N., 1987: Foraminiferal genera and their classification. Van Nostrand, Reinhold Co. New York 1728 pp. Plate 247, Figs. 15-17: L. Carboniferous (Visean), USSR. 15, Equatorial section, x 40 (from Rauzer-Chernousova, 1948); 16, 17, Carboniferous, Belogorod, Septsch Toula, USSR, side and apertural views (ex von Möller collection, USNM P3322), x 48 (from Loeblich and Tappan, 1964). courtesy of Michael Hesemann https://foraminifera.eu
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Loeblich, A. R., Tappan, H. N., 1987: Foraminiferal genera and their classification. Van Nostrand, Reinhold Co. New York 1728 pp. Plate 248, Fig. 2: L. Carboniferous (L. Visean), Namur Basin, Belgium. Sagittal section of holotype, x 75 (from Conil and Lys, 1965).
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Dunbar, C. O.; Skinner, J. W. (1937). Permian Fusulinidae of Texas; in The geology of Texas. Texas University Bulletin. 3701 v.3(2): 517-825., available online at (http://hdl.handle.net/2152/24042) page(s): p. 607 pl. 45 figs. 1-9 Lectotype pl. 45 fig. 7 designated by Thompson (1948)
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Rauzer-Chernousova, D. M.; Belyaev, G.; Reitlinger, E. (1936). ?????????????????? ???????????? ?????????? ???? - Upper Paleozoic foraminifera of the Pechora region. ????? ???????? ???????? ?? ???? - Proceedings of the Polar Commission AS USSR. 28: 159–232. page(s): p. 175 pl. 1 figs. 5-6 Source: Loeblich, A. R., Tappan, H. N., 1987: Foraminiferal genera and their classification. Van Nostrand, Reinhold Co. New York 1728 pp. Plate 267, Fig. 5-6: U. Carboniferous (Moscovian), USSR. 5, Axial section of holotype, x 50; 6, slightly diagonal sagittal section showing endothyroid early stage, x 35 (from Rauzer-Chernousova et al., 1936). Courtesy of Michael Hesemann foraminifera.eu
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Plummer, H. J. (1930). Calcareous foraminifera in the Brownwood shale near Bridgeport, Texas. University of Texas bulletin. 3019: 5-21., available online at (https://repositories.lib.utexas.edu/bitstream/handle/2152/23276/UT-bulletin-no3019.pdf) page(s): p. 13 pl. 1 fig. 2
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Magginetti, R. T.; Stevens, C. H.; Stone, P. (1988). Early Permian Fusulinids from the Owens Valley Group, east-central California. Geological Society of America Special Paper. 217: 1-61., available online at (https://doi.org/10.1130/SPE217-p1) page(s): p. 25, pl. 9, figs. 4-5 (holotype, fig. 4).