Nannotax3 - ntax_cenozoic - Cyclagelosphaera reinhardtii

Citation: Cyclagelosphaera reinhardtii (Perch-Nielsen, 1968) Romein, 1977

Basionym: Markalius reinhardtii Perch-Nielsen, 1968

Synonyms:

Tergestiella? reinhardtii (Perch-Nielsen 1968) Reinhardt, 1971

Variants:

Cyclagelosphaera bergeri Roth 1978 - with less well-developed central cone (Roth 1978 also suggests that many specimens described as Markalius circumradiatus in the Danian are actually Cyclagelosphaera)

Distinguishing features: Cyclagelosphaera with central-plug-forming inner tube cycle that is raised above shield level, forming a raised conical structure.

Geological Range:
Notes: C. reinhardtii is a characteristic component of Early Danian nannofloras then persists at lower abundances though the Paleocene
Last occurrence (top): within NP10 zone (54.17-55.86Ma, top in Ypresian stage). Data source: Bybell & Self-Trial, 1995
First occurrence (base): within Albian Stage (100.50-112.95Ma, base in Albian stage). Data source: Burnett 1998

References:

Bown, P. R., Gibbs, S. J., Sheward, R., O’Dea, S. & Higgins, D. (2014). Searching for cells: the potential of fossil coccospheres in coccolithophore research. Journal of Nannoplankton Research. 34(special): 5-21. gs V O

Mai, H. (2001). New coccolithophorid taxa fom the Guelhemmerberg airshaft. Lower Paleocene, The Netherlands. Micropaleontology. 47: 144-154. gs

Mai, H., von Salis, K., Willems, H. & Romein, A. J. T. (1997a). Fossil coccospheres from the K/T boundary section from Geulhemmerberg, The Netherlands. Micropaleontology. 43(281-302): -. gs

Okada, H. & Thierstein, H. R. (1979). Calcareous nannoplankton - Leg 43, Deep Sea Drilling Project. Initial Reports of the Deep Sea Drilling Project. 43: 507-573. gs V O

Perch-Nielsen, K. (1968c). Der Feinbau und die Klassifikation der Coccolithen aus dem Maastrichtien von Danemark. Biologiske Skrifter, Kongelige Danske Videnskabernes Selskab. 16: 1-96. gs

Reinhardt, P. (1971). Synopsis der Gattungen und Arten der mesozoischen Coccolithen und anderer kalkiger Nannofossilien. Teil III. Freiberger Forschungshefte. C267: 19-41. gs

Romein, A. J. T. (1977). Calcareous nannofossils from the Cretaceous/Tertiary boundary interval in the Barranco del Gredero (Caravaca, Prov. Murcia, S.E. Spain). II. Proceedings of the Koninklijke Nederlandse Akademie van Wetenschappen. B80: 269-279. gs

Romein, A. J. T., Willems, H. & Mai, H. (1996). Calcareous nannoplankton of the Geulhemmerberg K/T boundary section, Maastrichtian type area, the Netherlands. Geologie en Mijnbouw. 75: 231-238. gs

Roth, P. H. (1978). Cretaceous nannoplankton biostratigraphy and oceanography of the northwestern Atlantic Ocean. Initial Reports of the Deep Sea Drilling Project. 44: 731-760. gs V O

Tags	LITHS: placolith, circular, CA: ca_conjunct, closed, CSPH: equant, monomorphic, CROSS-POLARS: rim-unicyclic, R-prominent,
Metrics	Lith size: 5->8µm; Liths per sphere: 11->13 Data source notes: morphom data from illustrated specimens

Cyclagelosphaera reinhardtii

References:

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