Nannotax3 - ntax_cenozoic - Calicasphaera bipora Nannotax3 - ntax_cenozoic - Calicasphaera bipora

Calicasphaera bipora


Classification: ntax_cenozoic -> Holococcoliths -> open-tube -> Calicasphaera -> Calicasphaera bipora
Sister taxa: C. bipora, C. blokii, C. concava, C. diconstricta, C. sp.

Taxonomy:

Citation: Calicasphaera bipora Keuter et al. 2021
taxonomic rank: Species
Basionym: Calicasphaera bipora Keuter et al. 2021
Synonyms:
  • Holococcolithophore Yang et al. 2001, plate 1, fig. 2 and 3.

Distinguishing features:
Parent taxon (Calicasphaera): Chalice-shaped coccoliths. Monomorphic
This taxon: Liths oval, low, with openings at either end of central area

Farinacci & Howe catalog pages: Calicasphaera bipora


Morphology:

Coccosphere is monomorphic, ellipsoidal, 8–10 μm long, formed of ca. 80–90 coccoliths. Coccoliths are elliptical open tubes, flaring distally (calicaliths; Kleijne, 1991). The outer layer of the tube is formed of regular calcite rhombohedra with a small proximal flange at the base, consisting of a sin- gle ring of crystallites. Inside the tube, less regular crystal- lites occur, filling it with the exception of two large irregular pores at the ends of the longitudinal axis. The coccoliths are 1.4–1.8 μm long, 1–1.15 μm wide and 0.6–0.8 μm high. [Keuter et al. 2021]

Search data:
Lith 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): Extant. Data source:
First occurrence (base): within No known fossil record modern (0.00-0.00Ma, base in "Holocene" stage). Data source:

Plot of occurrence data:

References:

Keuter, S., Young, J. R., Koplovitz, G., Zingone, A. & Frada, M. J. (2021). Novel heterococcolithophores, holococcolithophores and life cycle combinations from the families Syracosphaeraceae and Papposphaeraceae and the genus Florisphaera. Journal of Micropalaeontology. 40: 75-99. gs O

Kleijne, A. (1991). Holococcolithophorids from the Indian Ocean, Red Sea, Mediterranean Sea and North Atlantic Ocean. Marine Micropaleontology. 17: 1-76. gs

Malinverno, E., Leoni , B. & Galli, P. (2022). Coccolithophore assemblages and a new species of Alisphaera from the Faafu Atoll, Maldives, Indian Ocean. Marine Micropaleontology. 172(102110): 1-16. gs

Yang, T-N., Wei, K-Y. & Gong G-C. (2001). Distribution of coccolithophorids and coccoliths in surface ocean off northeastern Taiwan. Botanical Bulletin of the Academia Sinica. 42: 287-302. gs


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Calicasphaera bipora compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 11-10-2024

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Short stable page link: https://mikrotax.org/Nannotax3/index.php?id=1693 Go to Archive.is to create a permanent copy of this page - citation notes
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