JM Journal of Micropalaeontology JM J. Micropalaeontol. 2041-4978 GSL Publishing Göttingen, Germany 10.1144/jm.13.2.157 Notes on the topotype and deep-sea specimens of the planktonic foraminifer <i>Cassigerinelloita amekiensis</i> Stolk Li Qianyu 0 Radford Sally 1 Department of Geology and Geophysics, The University of Adelaide, Adelaide, S.A. 5005, Australia Department of Geology, Imperial College, Prince Consort Road, London SW7 2BP, UK 01 12 1994 13 2 157 159 Copyright: © 1994 Qianyu Li 1994 This work is licensed under the Creative Commons Attribution 4.0 International License. To view a copy of this licence, visit https://creativecommons.org/licenses/by/4.0/ This article is available from https://jm.copernicus.org/articles/13/157/1994/jm-13-157-1994.html The full text article is available as a PDF file from https://jm.copernicus.org/articles/13/157/1994/jm-13-157-1994.pdf

Specimens of <i>Cassigerinelloita amekiensis</i> Stolk from the type collections and DSDP/ODP holes are found to possess a microperforate and pustulate wall and a triserial, pseudoplanispiral coiling mode. These characters prompt its affinity with the contemporaneous <i>Guembelitria triseriata</i> (Terquem). An amended description of <i>Cassigerinelloita amekiensis</i> is given, and the peculiar coiling mode discussed.

 References F. T., Banner: A classification and introduction to the Globigerinacea<italic>In</italic> (Eds), Aspects of Micropalaeontology, 142&#x2013;239, Allen and Unwin, London., 1982. W. H., Blow: The Cainozoic GlobigerinidaE.JBrill, Leiden., 1979. J. A., Cushman: An outline of a re-classification of the foraminifera, Contributions of the Cushman Laboratory for Formainiferal Research, 3, 1-105, 1927. Q., Li: Ultrastructure, morphology, affinities and reclassification of <italic>Cassigerinella</italic> Pokorny (Foraminiferida: Globigerinina), Journal of Micropalaeontology, 5, 49-64, 1986. Q., Li: Evolution and Distribution of Cenozoic Microperforate Planktonic ForaminiferaPhD thesis, University of London., 1991. Q., Li and S. S., Radford: Morphology and affinity of the planktonic foraminifer <italic>Cassigerinelloita amekiensis</italic> Stolk and reclassification of <italic>Cassigerinelloita</italic> Stolk<italic>In</italic> (Eds) Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 120: 595&#x2013;602., 1992. A. R., Loeblich and H., Tappan: Foraminiferal Genera and Their ClassificationVan Nostrand, New York., 1987. B., McGowran and A., Beecroft: <italic>Guembelitria</italic> in the early Tertiary of southern Australia and its palaeoceanographic significance, South Australia Department of Mines and Energy Special Publication, 5, 247-261, 1985. E., Montanaro Gallitelli: A revision of the foraminiferal family Heterohelicidae, US National Museum Bulletin, 215, 133-154, 1957. M., Nocchi, E., Amici and I., Premoli Silva: Planktonic foraminifer biostratigraphy and paleoenvironmental interpretation of Paleogene faunas from subantarctic transect, ODP Leg 114, Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 114, 233-279, 1991. S. W., Petters: Gulf of Guinea planktonic foraminiferal biochronology and geological history of the South Atlantic, Journal of Foraminiferal Research, 13, 32-99, 1983. J., Stolk: Contibution a l’étude des corrélations microfauniques du Tertiaire inférieur de la Nigeria Méridional, Mémoires Bureau de Recherches Géologiques et Minières, Orleans, 32, 247-278, 1965. L. D., Stott and J. P., Kennett: Antarctic Paleogene planktonic foraminifer biostratigraphy: ODP Leg 113 Sites 689 and 690, Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 113, 549-567, 1990.