Nannotax3 - ntax_cenozoic - Scyphosphaera lagena

Citation: Scyphosphaera lagena Kamptner, 1955

Synonyms:

Scyphosphaera turris Kamptner, 1955;
Scyphosphaera aequatorialis Kamptner, 1963;

these two species are virtually identical to S. lagena. S turris was placed in synonymy with S. lagena by Siesser (1998)

Variants:

Scyphosphaera canescens Kamptner, 1955; straighter sides, barely tapering.
Scyphosphaera cantharellus Kamptner, 1955; broader and squatter.
Scyphosphaera conica Kamptner, 1955; straighter sides, tapering.

Distinguishing features:
Parent taxon (Scyphosphaera): Coccospheres with Pontosphaera-like body coccoliths and equatorial coccoliths with rims elevated into vase-like structures (lopadoliths).
This taxon: Moderately elevated (3-5x as high as wide) with maximum width near base.

Typically shows recurved sides but specimens with straght sides included here.

Geological Range:
Notes: Range very poorly constrained
Last occurrence (top): within NN18 zone (1.93-2.39Ma, top in Gelasian stage). Data source: Young 1998
First occurrence (base): within NN7 zone (10.89-11.90Ma, base in Serravallian stage). Data source: Young 1998

References:

Kamptner, E. (1955). Fossile Coccolithineen-Skelettreste aus Insulinde. Eine mikropaläontologische Untersuchung. Verhandelingen der Koninklijke Nederlandse Akademie van Wetenschappen. ser 2, 50: 1-105. gs

Kamptner, E. (1963). Coccolithineen-Skelettreste aus Tiefseeablagerungen des Pazifischen Ozeans. Annalen des Naturhistorischen Museums in Wien. 66: 139-204. 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. (1972). Remarks on Late Cretaceous to Pleistocene coccoliths from the North Atlantic. Initial Reports of the Deep Sea Drilling Project. 12: 1003-1069. gs

Samtleben, C. (1978). Pliocene-Pleistocene coccolith assemblages from Sierra Leone Rise - Site 366, Leg 41. Initial Reports of the Deep Sea Drilling Project. 41(16): 913-931. 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 lagena

References:

Add Comment

Comments