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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 23, Figs. 1-2: Holocene, off Great Barrier Island, New Zealand. Top and side . views of topotype, x 28. 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 22, Figs. 10-11: Holocene, Gullmar Fjord, Sweden. 10, Exterior view of three individuals, x 50; 11, diagrammatic longitudinal section through apertmal region, showing outer opening (o), cylindrical apertmal sheath (c), constriction of opening (co), inner flattened apertmal sheath (is), lamella (1), and test outer layer (ol) and inner layer (il), about x 160 (from Dahlgren, 1962). courtesy of Michael Hesemann https://foraminifera.eu
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Image source: Cushman, J.A. 1918. The Foraminifera of the Atlantic Ocean. Part I. Astrorhizidae. Bull. U.S. Natl. Mus. 104.
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Image source: Cushman, J.A. 1910. A Monograph of the Foraminifera of the North Pacific Ocean. Part I. Astrorhizidae and Lituolidae. Bull. U.S. Nation. Mus 71: xiv+134 pp.
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Image source: Cushman, J.A. 1921. Foraminifera of the Philippine and adjacent seas. Bull. U.S. Natl. Mus. 100(4).
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Atlas of Paleogene Cosmopolitan Deep Water Agglutinated Foraminifera (http://www.nhm2.uio.no/norges/atlas/011.htm) Left: type specimens of P. placenta, from Grzybowski (1898). Right: specimens from the Ciezkowice beds illustrated by Geroch (1960).
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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 23, Fig. 9: Permian, Carnavon Basin, Western Australia. Side view, x 39 (from Crespin, 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 21, Fig. 11: L. Silurian, Brassfield Limestone, Indiana, USA. Top view, x 100 (from Mound, 1961). 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 21, Fig. 3: Ordovician, Estonia. Exterior, x 95 (from Eisenack, 1954). 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 26, Figs. 1-2: Silurian, Oklahoma, USA. Edge and top views of topotype, x 162). courtesy of Michael Hesemann https://foraminifera.eu