Calculites additus


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

Distinguishing features: Formed of five bocks, with pores and central spine


Taxonomy:

Citation: Calculites additus (Wind & Wise in Wise & Wind, 1977) Perch-Nielsen, 1984
Rank: Species
Basionym: Phanulithus additus Wind & Wise in Wise & Wind, 1977

Farinacci & Howe catalog pages: P. additus *

Distinguishing features: Formed of five bocks, with pores and central spine

Search data:
TagsLITHS: holococcolith, elliptical, hollow, CA: ca_conjunct, process, closed, CROSS-POLARS: rim-unicyclic, R-prominent,
MetricsLith size: 5->7µm; Segments: 5->5;
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 Maastrichtian Stage (66.04-72.05Ma, top in Maastrichtian stage). Data source: Burnett 1998
First occurrence (base): within Campanian Stage (72.05-83.64Ma, base in Campanian 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 V O

Perch-Nielsen, K. (1984b). Validation of new combinations. INA Newsletter. 6(1): 42-46. gs V O

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 V O

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Calculites additus compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 19-1-2021

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