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Operculina heterosteginoides Hofker, 1933
Description Loeblich, A. R.; Tappan, H. (1987). Foraminiferal Genera and their Classification. Van Nostrand Reinhold Company, New York. 970pp.pl. 813, figs. 4-8.
Holocene. Sabah. (North Borneo), Malaysia. Type species of Planoperculina Hottinger. 4. Side view, megalospheric. x 20: 5, araldite cast of equalorial section showing megalospheric embryo at left and operculinoid structure of inner whorls. x 240. 6. araldite cast of superficial tangential section. x 600. 7. megalospheric test split in equatorial plane. x 20: 8. araldite cast of slightly inclined tangential section showing septal fold at left, and double trabecular canals. x 240 all SEM. from Hottinger. 1977. PNG file - 637.38 kB - 616 x 943 pixels added on 2026-09-2144 viewsForaminifera taxa Operculina heterosteginoides Hofker, 1933 accepted as Planoperculina heterosteginoides (Hofker, 1933)checked Le Coze, François 2026-09-21
Source:
Loeblich, A. R.; Tappan, H. (1987). Foraminiferal Genera and their Classification. Van Nostrand ...
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