Cyclagelosphaera sp.


Classification: ntax_cenozoic -> Mesozoic Survivors -> Watznaueriaceae -> Cyclagelosphaera -> Cyclagelosphaera sp.
Sister taxa: C. alta, C. margerelii, C. reinhardtii, C. rotaclypeata, C. sp.

Taxonomy:

Citation: Cyclagelosphaera sp.
Rank: generic level id
Synonyms: Markalius perforatus Perch-Nielsen 1973
Cyclagelosphaera perforata (Perch-Nielsen 1973) Verbeek 1977
Taxonomic discussion: Markalius perforatus is included here as it appears to be an early growth phase of Cyclagelosphaera

Distinguishing features: Specimens which cannot be assigned to any established species

Farinacci & Howe catalog pages: M. perforatus *

Search data:
TagsLITHS:
MetricsLith size: 0->0µm;
The morphological data given here can be used on the advanced search page. See also these notes

Geological Range:
Last occurrence (top): within NP10 zone (54.17-55.86Ma, top in Ypresian stage). Data source: same as genus
First occurrence (base): within NJ11 zone (166.40-168.67Ma, base in Bajocian stage). Data source: same as genus

Plot of occurrence data:

References:

Bybell, L. & Self-Trail, J. (1997). Late Paleocene and Early Eocene calcareous nannofossils from three boreholes in an onshore-offshore transect from New Jersey to the Atlantic continental rise. Proceedings of the Ocean Drilling Program, Scientific Results. 150: 91-110. gs V O

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

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

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Cyclagelosphaera sp. compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 27-2-2021

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