Scyphosphaera apsteinii forma dilatata

Classification: Coccolithophores -> Zygodiscales -> Pontosphaeraceae -> Scyphosphaera -> Scyphosphaera apsteinii -> Scyphosphaera apsteinii forma dilatata
Sister taxa: S. apsteinii forma dilatata,


Citation: Scyphosphaera apsteinii forma dilatata Gaarder, 1970
Rank: Form
Variants: S. aranta Kamptner 1967; also described from Holocene, it is shown as similar in shape but with a flange half way up the lopadolith. It is hard to be sure what was illustrated.
Synonyms: Thse two species were described from Holocene sediments. They are clearly the same form as S. apsteinii forma dilatata, they were described one year before it, however, names do not have priority outside the rank they were described for.
Notes & discussion: This form occurs in cultures of S. apsteinii (unpubl. obs. Young, Probert) so probably should not be regarded as a discrete taxon.

Distinguishing features:

Farinacci & Howe catalog pages: Scyphosphaera apsteinii dilatata * , Scyphosphaera antilleana * , Scyphosphaera aranta * , Scyphosphaera coheni *

Search data:
TagsLITHS: murolith, flaring distally, elliptical, cylindrical, hollow, RIM: outer wall acw-imbricate, CA: plate, pores, PROCESS: hollow,
CSPH: spherical, equant, BC-dimorphic, EqC, EqC-tubular, polymorphic, V-UNITS: outer-rim, V-prominent, R-UNITS: c-str, inner-rim, px-plate, R-prominent, DETAILS: rim-bicyclic, isogyres oblique, isogyres separated,
MetricsLith size: 10->25µm;
Sources: lith height from ODs
The morphological data given here can be used on the advanced search page. See also these notes

Geological Range:
Notes: Range very poorly constrained
Last occurrence (top): Extant Data source: present in the plankton (Young et al. 2003)
First occurrence (base): within NN11 zone (5.59-8.29Ma, base in Tortonian stage). Data source: Young 1998

Plot of occurrence data:

  • Histogram - Neptune occurrence data from DSDP and ODP proceedings. Pale shading <50 samples in time bin. Interpret with caution & read these notes
  • Note to users in China - the diagram may not plot unless you use a VPN since I use google services on the website. If this is a problem please contact me 谢谢.
  • Taxon plotted: Scyphosphaera apsteinii forma dilatata, synonyms included - Scyphosphaera antilleana; Scyphosphaera apsteinii dilatata; Scyphosphaera aranta; Scyphosphaera cohenii; Scyphosphaera apsteinii forma dilatata;
  • space-time plot :: Samples map :: Parent: Scyphosphaera apsteinii


    Boudreaux, J. E. & Hay, W. W. (1969). Calcareous nannoplankton and biostratigraphy of the late Pliocene-Pleistocene-Recent sediments in the Submarex cores. Revista Española de Micropaleontología. 1(3): 249-292. gs

    Cros, L. & Fortuño, J. -M. (2002). Atlas of northwestern Mediterranean coccolithophores. Scientia Marina. 66: 186-. gs

    Gaarder, K. R. (1970). Three new taxa of Coccolithineae. Nytt Magasin for Botanikk. 17(2): 113-126. gs

    Kamptner, E. (1967). Kalkflagellaten - Skelettreste aus Tiefseeschlamm des Südatlantischen Ozeans. Annalen des Naturhistorischen Museums in Wien. 71: 117-198. gs

    Müller, C. (1974b). Calcareous nannoplankton, Leg 25 (Western Indian Ocean). Initial Reports of the Deep Sea Drilling Project. 25: 579-633. gs

    Perch-Nielsen, K. (1977). Albian to Pleistocene calcareous nannofossils from the Western South Atlantic, DSDP Leg 39. Initial Reports of the Deep Sea Drilling Project. 39: 699-823. gs

    Siesser, W. G. (1998). Calcareous nannofossil Genus Scyphosphaera: structure, taxonomy, biostratigraphy, and phylogeny. Micropaleontology. 44(4): 351-384. gs

    Young, J. R. (1998). Neogene. In, Bown, P. R. (ed.) Calcareous Nannofossil Biostratigraphy. British Micropalaeontological Society Publication Series. 225-265. gs


    Scyphosphaera apsteinii forma dilatata compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 23-2-2020

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