Papposphaera lepida


Classification: ntax_cenozoic -> Coccolith families inc sed -> Papposphaeraceae -> Papposphaera -> Papposphaera lepida
Sister taxa: P. lepida ⟩⟨ P. obpyramidalis, P. simplicissima ⟩⟨ P. sagittifera, P. sarion, P. arctica, P. iugifera, P. heldalii ⟩⟨ P. bourrellii, P. thomsenii, P. sp. type 1, P. sp. type 2, P. sp. type 3, P. sp. type 4, P. sp. type 5, P. sp. type 6, P. sp.

Taxonomy:

Citation: Papposphaera lepida Tangen, 1972
Rank: Species

Distinguishing features: Central areas with axial cross;
Process 2-4 µm high, supporting flat cone of four large elements, these form an almost continuous outer layer to the coccosphere.

Farinacci & Howe catalog pages: P. lepida *


Morphology: Although described as monomorphic coccopshres often show significant variation in spine height and calyx diameter so they are perhaps better described as varimorphic. Some images suggest the coccoliths with taller nspines and larger calices may occur equatorially.

Size: Cell spherical, 4.5-7 µm, diameter of coccosphere 11-16 µm. Coccoliths, 1-1.5 µm long;


Biology & life-cycles: One combination coccosphere with a poorly preserved "Turrisphaera" type holococcolith observed (JRY unpubl.).

See also: Papposphaera HOL ;

Search data:
TagsLITHS: murolith, elliptical, CA: cross-axial, ca_disjunct, process,
CSPH: equant, monomorphic,
MetricsLith size: 0.5->1.5µm; Coccosphere size: 4->8µm; Liths per sphere: 45->90
Data source notes: lith size (BC diameter) from Cros & Fortuño 2002; csph data from Cros & Fortuño 2003;
The morphological data given here can be used on the advanced search page. See also these notes

Geological Range:
Last occurrence (top): Extant Data source: present in the plankton (Young et al. 2003)
First occurrence (base): within No known fossil record modern (0.00-0.00Ma, base in "Holocene" stage). Data source: [JRY rough estimate]

Plot of occurrence data:

References:

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

Okada, H. & McIntyre, A. (1977). Modern coccolithophores of the Pacific and North Atlantic Oceans. Micropaleontology. 23(1): 1-55. gs

Tangen, K. (1972). Papposphaera lepida, gen. nov. n. sp., a new marine coccolithophorid from Norwegian coastal waters. Norwegian Journal of Botany. 19: 171-178. gs

Thomsen, H. A. (2016). Baltic Sea coccolithophores – an overview of insights into their taxonomy and ecology from the last 40 years. Journal of Nannoplankton Research. 36(2): 97-119. gs V O

Young, J. R., Geisen, M., Cros, L., Kleijne, A., Probert, I. & Ostergaard, J. B. (2003). A guide to extant coccolithophore taxonomy. Journal of Nannoplankton Research, Special Issue. 1: 1-132. gs V O

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Papposphaera lepida compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 1-3-2021

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