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Nannotax3 - ntax_mesozoic - Calculites ovalis Nannotax3 - ntax_mesozoic - Calculites ovalis

Calculites ovalis


Classification: ntax_mesozoic -> Holococcoliths -> Common genera -> Calculites -> Calculites ovalis
Sister taxa: C. favosus ⟩⟨ C. anfractus, C. axosuturalis, C. obscurus, C. ovalis, C. rosalyniae, C. additus, C. karaiensis ⟩⟨ C. cenomanicus, C. cyclops, C. juliae, C. maghredaswampensis, C. paulus, C. percernis, C. proscissus, C. turonicus ⟩⟨ C. sarstedtensis, C. suturus, C. sp.

Distinguishing features:
Parent taxon (Calculites): Holococcoliths with a proximal plate of four blocks; ridged and pitted distal surface; and short, narrow, hollow spines. Entire coccolith bright in xpl in plan view
This taxon: Calculites with four blocks divided along near axial sutures.


Taxonomy:

Citation: Calculites ovalis (Stradner, 1963) Prins & Sissingh in Sissingh, 1977
Taxonomic rank: species
Basionym: Tetralithus ovalis Stradner, 1963
Synonyms: Phanulithus ovalis

Farinacci & Howe catalog pages: T. ovalis *

Distinguishing features:
Parent taxon (Calculites): Holococcoliths with a proximal plate of four blocks; ridged and pitted distal surface; and short, narrow, hollow spines. Entire coccolith bright in xpl in plan view
This taxon: Calculites with four blocks divided along near axial sutures.

Search data:
LITHS: holococcolith, elliptical, hollow, CA: closed, pores, process, ca_conjunct, CROSS-POLARS: R-prominent, rim-unicyclic,
Lith size: 5->7µm; Segments: 4->4;
Data source notes: guesstimate
The morphological data given here can be used on the advanced search page. See also these notes

Geological Range:
Last occurrence (top): within Maastrichtian Stage (66.04-72.17Ma, top in Maastrichtian stage). Data source: Burnett 1998
First occurrence (base): within Coniacian Stage (85.70-89.39Ma, base in Coniacian stage). Data source: Burnett 1998

Plot of occurrence data:

References:

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

Püttmann, T. & Mutterlose, J. (2019). Calcareous nannofossils from a Late Cretaceous nearshore setting. Journal of Nannoplankton Research. S4: 81-88. gs

Salomon, R. (1999). The Calcite Palace. Website - https://ina.tmsoc.org/galleries/CalcitePalace/index.htm. -. gs

Sissingh, W. (1977). Biostratigraphy of Cretaceous calcareous nannoplankton. Geologie en Mijnbouw. 65(1): 37-65. gs

Stradner, H. (1963). New contributions to Mesozoic stratigraphy by means of nannofossils. In, Proceedings of the Sixth World Petroleum Congress. Section 1 Paper 4: 167-183. gs

Wise, S. W. & Wind, F. H. (1977). Mesozoic and Cenozoic calcareous nannofossils recovered by DSDP Leg 36 drilling on the Falkland Plateau, south-west Atlantic sector of the Southern Ocean. Initial Reports of the Deep Sea Drilling Project. 36(269-491): -. gs O


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Calculites ovalis compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 17-3-2025

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Short stable page link: https://mikrotax.org/Nannotax3/index.php?id=10173 Go to Archive.is to create a permanent copy of this page - citation notes
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