Foraminifera image
Helicolepidina spiralis (Tobler, 1922)
Description Loeblich, A. R., Tappan, H. N., 1987: Foraminiferal genera and their classification. Van Nostrand, Reinhold Co. New York 1728 pp. Plate 680, Figs. 1-8: Eocene. 1, U. Eocene, Gatuncillo Formation, Panama, axial section, x 12.5; 2, near Ameluca, Puebla State, Mexico, axial section, x 33.5; 3, Northwest Peru, equatorial section, microspheric, x 29; 4, Soldado Rock, Trinidad, West Indies, equatorial section, megalospheric, x 27; 5, Gatuncillo Formation, Panama Canal Zone, exterior, x 5; 6, Moruga, Trinidad, West Indies, decalcified canada balsam preparation, the filled chamber cavities and stolons appearing dark, and space formerly represented by wall appearing light, x 210; 7, Rio San Pedro, Venezuela, central part of equatorial section of holotype (Tobler's specimen), x 80; 8, Panama, equatorial section, x 20 (1, 5, 8, from Cole, 1952; 2, from R. W. Barkerand Grimsdale, 1936; 3, from R. W. Barker, 1934; 4, 6, from Vaughan, 1936; 7, from Brönnimann, 1944).
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added on 2023-12-0430 viewsForaminifera taxaDigital photo, entire species Helicolepidina spiralis (Tobler, 1922) †checked Le Coze, François 2023-12-04
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