Taxonomy:
Farinacci & Howe catalog pages: Calculites sarstedtensis *
Morphology remarks: "A species of Calculites with a thin outer rim and up to eight depressions in the distal surface arranged around a central boss or spine base," [Crux 1987]
Size: Length of coccolith 3.4-4.0 µm (five specimens measured). [Crux 1987]
Geological Range:
Last occurrence (top): within Late Hauterivian Substage (130.77-133.09Ma, top in Hauterivian stage). Data source: Crux, 1987 (original description)
First occurrence (base): within Late Hauterivian Substage (130.77-133.09Ma, base in Hauterivian stage). Data source: Crux, 1987 (original description)
Plot of occurrence data:
Crux, J. A. (1987c). Six new species of calcareous nannofossils from the Lower Cretaceous strata of England and Germany. INA Newsletter. 9: 30-35. gsReferences:
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Calculites sarstedtensis compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 9-12-2019
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