Distinguishing features: Formed of five bocks, with pores and central spine
Taxonomy:
Farinacci & Howe catalog pages: P. additus *
Distinguishing features: Formed of five bocks, with pores and central spine
Search data:Tags | LITHS: holococcolith, elliptical, hollow, CA: ca_conjunct, process, closed, CROSS-POLARS: rim-unicyclic, R-prominent, |
Metrics | Lith size: 5->7µm; Segments: 5->5; Data source notes: original description & illustrated specimens |
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:
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 OReferences:
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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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