Nannotax3 - ntax_cenozoic - Scyphosphaera apsteinii forma dilatata

Nannotax3 - ntax_cenozoic - Scyphosphaera apsteinii forma dilatata Nannotax3 - ntax_cenozoic - Scyphosphaera apsteinii forma dilatata

Scyphosphaera apsteinii forma dilatata

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

Cros & Fortuno 2002 f013D.JPG
Muller74Leg25-pl13-4.JPG
PerchNielsen1977 pl29_fig12.JPG
Siesser1998 pl2-2a.JPG
Young1998_apsteinii_f_dilatata.jpg

Taxonomy:

Citation: Scyphosphaera apsteinii forma dilatata Gaarder, 1970

taxonomic rank: form

Synonyms:

S. antilleana Boudreaux and Hay, 1969;
S. cohenii Boudreaux and Hay, 1969;

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.

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.

Taxonomic 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:
Parent taxon (Scyphosphaera apsteinii): Simple convex outward profile, or somewhat constricted at base.
This taxon: Form of S. apsteinii with wide distal opening.

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

Search data:

LITHS: murolith, elliptical, cylindrical, hollow, CA: plate, pores,
CSPH: equant, BC-dimorphic, CROSS-POLARS: rim-bicyclic, V-prominent, R-prominent,

Lith size: 10->25µm;
Data source notes: 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:

Range-bar - range as quoted above, pink interval top occurs in, green interval base occurs in.
Triangles indicate an event for which a precise placement has been suggested
Histogram - Neptune occurrence data from DSDP and ODP proceedings. Pale shading <50 samples in time bin. Interpret with caution & read these notes
Taxon plotted: Scyphosphaera apsteinii forma dilatata, synonyms included - Scyphosphaera antilleana; Scyphosphaera apsteinii dilatata; Scyphosphaera aranta; Scyphosphaera cohenii; Scyphosphaera apsteinii forma dilatata;
See also space-time plot :: Samples map :: Parent: Scyphosphaera apsteinii

References:

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 O

Cros, L. & Fortuño, J. -M. (2002). Atlas of northwestern Mediterranean coccolithophores. Scientia Marina. 66: 1-186. gs

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

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

Müller, C. (1974). 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 O

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