Nannotax3 - ntax_mesozoic - Cyclagelosphaera platyaspis

Cyclagelosphaera platyaspis


Classification: ntax_mesozoic -> Watznaueriales -> Watznaueriaceae -> Cyclagelosphaera -> Cyclagelosphaera platyaspis
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:  Like C. margerelii, but larger (7.0–8.5 μm), with a very narrow (1–1.5 μm), closed, central area.


Taxonomy:

Citation: Cyclagelosphaera platyaspis Aguado, in Aguado et al. 2022
Rank: species

Farinacci & Howe catalog pages: C. platyaspis *

Distinguishing features:
Parent taxon (Cyclagelosphaera): Circular watznaueriacean coccoliths.
This taxon:  Like C. margerelii, but larger (7.0–8.5 μm), with a very narrow (1–1.5 μm), closed, central area.


Morphology:

Circular placoliths with proximal and distal shield ele- ments composed by R-units. In distal view, the V-unit forms a narrow distal cycle around the central area and is seen as a thin, dark line under XPL. The central area is very small (1.1–1.4 μm) compared to the distal shield (7.0–8.4 μm), and is completely closed. [Aguado et al. 2022]

Size:


Ecology & Biogeography


Biology & life-cycles

Phylogenetic relations

Search data:
LITHS: placolith, circular, CA: closed, CROSS-POLARS: R-prominent,
Lith size: 0->0µm;
Data source notes: Aguado et al. 2022
The morphological data given here can be used on the advanced search page. See also these notes

Geological Range:
Last occurrence (top): within NC6a subzone (125.95-126.40Ma, top in Aptian stage). Data source: Aguado et al. 2022
First occurrence (base): within NC5e subzone (126.40-127.31Ma, base in Barremian stage). Data source: Aguado et al. 2022

Plot of occurrence data:

References:

Aguado, R., Company, M., O'Dogherty, L., Sandoval, J. & Martinez, M. (2022). New insights into the Barremian–lower Aptian calcareous nannofossils of the Mediterranean Tethys: Chronostratigraphic and paleobiogeographic implications. Marine Micropaleontology. 173: 1-24. gs V O


nannotaxlogo400px

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

Taxon Search:
Advanced Search

Short stable page link: https://mikrotax.org/Nannotax3/index.php?id=11411 Go to Archive.is to create a permanent copy of this page - citation notes



Comments (0)

No comments yet on this page. Please do add comments if you spot any problems, or have information to share

Add Comment

* Required information
1000
Captcha Image
Powered by Commentics