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Bolivina, Cibicides, Elphidium, Uvigerina, Quinqueloculina |
Cassidulina is a genus of foraminifera described in the Treatise Part C. (Loeblich & Tappan, 1964), as having a free, lenticular test, with central boss of clear calcite on either side. Chambers are biserially arranged, enrolled planispirally with a subangular to keeled periphery. The wall is calcareous, hyaline (glassy), optically granular, perforate. The surface is smooth with a polished appearance. Sutures are radial to oblique, straight or curved. The aperture is a narrow arched slip at the base of the apertural face, partly closed by an apertural place. (Loeblich and Tappan 1988)
The taxonomy of Cassidulina is rather stable, and is included in the Cassidulinidae at least as far back as Cushman, 1950. Related genera include Cassidulinella, Favocassidulina, Globocassidulina, and Buriela. Cassidulina, itself, is cosmopolitan, with a stratigraphic range extending from the Upper Eocene to recent.
Cassidulina albemariensis McCulloch, 1977Cassidulina alternans Yabe & Hanzawa, 1925Cassidulina asanoi Uchio, 1950Cassidulina bradshawi Uchio, 1960Cassidulina braziliensis Cushman, 1922Cassidulina caledoniana McCulloch, 1981Cassidulina carapitana Hedberg, 1937 †Cassidulina carinata Silvestri, 1896Cassidulina costatula Cushman, 1933Cassidulina cretacea Cushman, 1931Cassidulina crustosa Saidova, 1975Cassidulina curvata Phleger & Parker, 1951Cassidulina curvatiformis McCulloch, 1977Cassidulina cushmani R.E. & K.C. Stewart, 1930Cassidulina deafueraensis McCulloch, 1977Cassidulina delicatiformis (McCulloch, 1977)Cassidulina detierraensis McCulloch, 1977Cassidulina differens McCulloch, 1977Cassidulina elegantissima Cushman, 1925Cassidulina globosa Hantken, 1865Cassidulina hoodensis McCulloch, 1977Cassidulina inflatiformis McCulloch, 1977Cassidulina insueta Cushman, 1947Cassidulina izuensis Aoki, 1967Cassidulina kasiwazakiensis Husezima & Maruhasi, 1944Cassidulina laevigata d'Orbigny, 1826Cassidulina limbata Cushman & Hughes, 1925Cassidulina lineocorrugata McCulloch, 1977Cassidulina lobulata McCulloch, 1977Cassidulina lomitensis Galloway & Wissler, 1927Cassidulina margareta Karrer, 1877 †Cassidulina marshallana Todd, 1954Cassidulina moluccensis Germeraad, 1946Cassidulina monicaniformis McCulloch, 1977Cassidulina monstruosa Voloshinova, 1952 †Cassidulina neoteretis Seidenkrantz, 1995Cassidulina norvangi Thalmann, 1952Cassidulina obtusa Williamson, 1858Cassidulina oshimai Aoki, 1967Cassidulina palmerae Bermúdez & Acosta, 1940Cassidulina patula Cushman, 1933Cassidulina penangensis McCulloch, 1977Cassidulina perumbonata Keyzer, 1953Cassidulina pilasensis McCulloch, 1977Cassidulina planata Saidova, 1975Cassidulina planulata McCulloch, 1977Cassidulina pulchella d'Orbigny, 1839Cassidulina quadrata Cushman & Hughes, 1925Cassidulina radiata Chave, 1987Cassidulina rarilocula Cushman, 1933Cassidulina reniforme Nørvangi, 1945Cassidulina seca McCulloch, 1977Cassidulina simpsonsbayensis McCulloch, 1977Cassidulina spiniferiformis McCulloch, 1977Cassidulina spiralis Natland, 1938Cassidulina striatostoma Zheng, 1979Cassidulina subcalifornica Drooger, 1953Cassidulina subcarinata Uchio, 1960Cassidulina sublaevigata Hofker, 1956Cassidulina sublimbata Asano & Nakamura, 1937Cassidulina subtumida Cushman, 1933Cassidulina teretis Tappan, 1951Cassidulina tortuosa Cushman & Hughes, 1925Cassidulina translucens Cushman & Hughes, 1925Cassidulina tumida Natland, 1938Cassidulina velaensis McCulloch, 1981Cassidulina victoriensis Collins, 1974Cassidulina vulgata McCulloch, 1977Cassidulina wakasaensis Asano & Nakamura, 1937Cassidulina weinmanensis McCulloch, 1977Cassidulina wordeni McCulloch, 1977Cassidulina wrangellensis McCulloch, 1977Cassidulina yabei Asano & Nakamura, 1937Cassidulina (foraminifera) Wikipedia (Text) CC BY-SA