Nannotax3 - ntax_mesozoic - Cyclagelosphaera jiangii

Cyclagelosphaera jiangii


Classification: ntax_mesozoic -> Watznaueriales -> Watznaueriaceae -> Cyclagelosphaera -> Cyclagelosphaera jiangii
Sister taxa: C. margerelii ⟩⟨ C. alta, C. reinhardtii, C. rotaclypeata, C. shenleyensis ⟩⟨ C. argoensis, C. jiangii, C. lacuna, C. wiedmannii ⟩⟨ C. brezae, C. centrumelliptica, C. deflandrei, C. platyaspis, C. sp.

Distinguishing features:
Parent taxon (Cyclagelosphaera): Circular watznaueriacean coccoliths.
This taxon: Medium-sized Cyclagelasphaera with an open central area, equivalent in width to that of the shield width. Grill of rotated bars in well-preserved specimens.


Taxonomy:

Citation: Cyclagelosphaera jiangii Covington & Wise, 1987
Rank: Species

Farinacci & Howe catalog pages: C. jiangii *

Distinguishing features:
Parent taxon (Cyclagelosphaera): Circular watznaueriacean coccoliths.
This taxon: Medium-sized Cyclagelasphaera with an open central area, equivalent in width to that of the shield width. Grill of rotated bars in well-preserved specimens.


Morphology:

Distinguished from other species of Cyclagelosphaera by the large central opening.

Size:


Ecology & Biogeography


Biology & life-cycles

Phylogenetic relations

Search data:
LITHS: placolith, circular, CA: ca_conjunct, grill, vacant,
CSPH: equant, monomorphic, CROSS-POLARS: rim-unicyclic, R-prominent,
Lith size: 4->7µm;
Data source notes: original description & illustrated specimens
The morphological data given here can be used on the advanced search page. See also these notes

Geological Range:
Last occurrence (top): within NC4 zone (132.87-132.93Ma, top in Hauterivian stage). Data source: Bown 2005
First occurrence (base): within NC2 zone (139.45-144.93Ma, base in Berriasian stage). Data source: Bown 2005

Plot of occurrence data:

References:

Bown, P. R. (2005c). Early to Mid-Cretaceous Calcareous Nannoplankton from the Northwest Pacific Ocean, Leg 198, Shatsky Rise. Proceedings of the Ocean Drilling Program, Scientific Results. 198: 1-82. gs O

Covington, J. M. & Wise, S. W. (1987). Calcareous nannofossil biostratigraphy of a Lower Cretaceous deep-sea fan complex: Deep Sea Drilling Project Leg 93 Site 603, lower continental rise off Cape Hatteras. Initial Reports of the Deep Sea Drilling Project. 93: 617-660. gs O


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Cyclagelosphaera jiangii compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 3-12-2022

Taxon Search:
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Short stable page link: https://mikrotax.org/Nannotax3/index.php?id=10345 Go to Archive.is to create a permanent copy of this page - citation notes



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