Nannotax3 - ntax_cenozoic - Goniolithus fluckigeri

Citation: Goniolithus fluckigeri Deflandre, 1957

Distinguishing features: Medium-sized pentagonal liths, with narrow rim and granular central area plate. Dark image in LM.

Morphology: The marginal elements show weak birefringence with broadly radial c-axis orientation (Deflandre 1957, JRY unpubl obs.). This suggests the c-axes are sub-vertical but slightly inclined radially (similar to D. pentaradiatus)

Size: Deflandre (1957) gave size range of 6-7µm and illusrated speciemens only range in size from 5-7 µm, so size seems rather constant.

Geological Range:
Notes: Most common in the Early Danian but rare occurrences have been recorded in the Eocene and Oligocene as well as from the Late Cretaceous
Last occurrence (top): within Oligocene Epoch (23.03-33.89Ma, top in Chattian stage). Data source: rough estimate
First occurrence (base): within Coniacian Stage (86.26-89.77Ma, base in Coniacian stage). Data source: Burnett 1998

References:

Bown, P. R. & Newsam, C. (2017). Calcareous nannofossils from the Eocene North Atlantic Ocean (IODP Expedition 342 Sites U1403–1411). Journal of Nannoplankton Research. 37(1): 25-60. gs V O

Burnett, J. A. (1998). Upper Cretaceous. In, Bown, P. R. (ed.) Calcareous Nannofossil Biostratigraphy. British Micropalaeontological Society Publication Series. 132-199. gs V O

Bybell, L. M. & Self-Trail, J. (1995). Evolutionary, biostratigraphic and taxonomic study of calcareous nanofossils from a continuous Palaeocene-Eocene boundary section in New Jersey. U.S. Geological Survey, Professional Paper. 1554: 1-36. gs V O

Bybell, L. (1975). Middle Eocene calcareous nannofossils at Little Stave Creek, Alabama. Tulane Studies in Geology and Paleontology. 11(4): 177-247. gs V O

Deflandre, G. (1957). Goniolithus nov. gen., type d'une famille nouvelle de Coccolithophoridés, à éléments pentagonaux non composites. Comptes Rendus Hebdomadaires des Séances de l'Académie des Sciences, Paris. 244: 2539-2541. gs

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

Varol, O. (1998). Palaeogene. In, Bown, P. R. (ed.) Calcareous Nannofossil Biostratigraphy. British Micropalaeontological Society Publication Series. 200-224. gs

Tags	LITHS: nannolith-other, pentagonal, CA: closed, CSPH: equant, monomorphic, CROSS-POLARS: V-prominent,
Metrics	Lith size: 5->7µm; Segments: 5->5; Data source notes: lith size from OD & illustrated specimens

Goniolithus fluckigeri

References:

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