Nannotax3 - ntax_cenozoic - Pontosphaera punctosa

Citation: Pontosphaera punctosa (Bramlette & Sullivan, 1961) Perch-Nielsen, 1984

Basionym: Discolithus punctosus Bramlette & Sullivan, 1961

Distinguishing features: Pontosphaera with plate that has marginal furrows and small pores, and larger pores towards the centre.

Geological Range:
Last occurrence (top): within NP16 zone (40.40-42.87Ma, top in Bartonian stage). Data source: Self-Trail 2011
First occurrence (base): within NP15 zone (42.87-46.29Ma, base in Lutetian stage). Data source: Self-Trail 2011

References:

Bown, P. R. (2005d). Palaeogene calcareous nannofossils from the Kilwa and Lindi areas of coastal Tanzania (Tanzania Drilling Project 2003-4). Journal of Nannoplankton Research. 27(1): 21-95. gs V O

Bramlette, M. N. & Sullivan, F. R. (1961). Coccolithophorids and related nannoplankton of the Early Tertiary in California. Micropaleontology. 7(2): 129-188. gs

Perch-Nielsen, K. (1967b). Nannofossilien aus dem Eozan von Danemark. Eclogae Geologicae Helvetiae. 60: 19-32. gs V O

Perch-Nielsen, K. (1971c). Elektronenmikroskopische untersuchungen an Coccolithen und verwandten Formen aus dem Eozan von Danemark. Biologiske Skrifter, Kongelige Danske Videnskabernes Selskab. 18(3): 1-76. gs

Perch-Nielsen, K. (1984b). Validation of new combinations. INA Newsletter. 6(1): 42-46. gs V O

Self-Trail, J. (2011). Paleogene Calcareous Nannofossils of the South Dover Bridge core, Southern Maryland (USA). Journal of Nannoplankton Research. 32(1): 1-28. gs V O

Shepherd, C. L. & Kulhanek, D. K. (2016). Eocene nannofossil biostratigraphy of the mid-Waipara River section, Canterbury Basin, New Zealand. Journal of Nannoplankton Research. 26(1): 33-59. gs V O

Tags	LITHS: murolith, elliptical, CA: pores, CROSS-POLARS: rim-bicyclic, V-prominent, R-prominent,
Metrics	Lith size: 8->12µm; Data source notes: lith size from ODs & illustrated specimens

Pontosphaera punctosa

References:

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