Braarudosphaera bigelowii


Classification: Mesozoic -> Braarudosphaerales -> Braarudosphaeraceae -> Braarudosphaera -> Braarudosphaera bigelowii
Sister taxa: B. amputans, B. batilliformis, B. bigelowii, B. pseudobatilliformis, B. turbinea, B. wendlerae, B. stenorhetha, B. africana, B. hockwoldensis, B. primula, B. regularis, B. quinquecostata, B. sp.,

Distinguishing features: Braarudosphaera with pentagonal outline.


Taxonomy:

Citation: Braarudosphaera bigelowii (Gran & Braarud, 1935) Deflandre, 1947
Rank: Species
Basionym: Pontosphaera bigelowii Gran & Braarud, 1935
Variants: Although separately described both names refer to forms with imbricate elements.
Synonyms:
Notes & discussion: The species was described from the modern plankton but almost identical specimens occur in the Cretaceous so the same name is applied.

Farinacci & Howe catalog pages: Pontosphaera bigelowi * , Micrantholithus lidiae *

Distinguishing features: Braarudosphaera with pentagonal outline.

Search data:
TagsLITHS: nannolith-radiate, pentagonal, CA: closed,
CSPH: equant, BC-dimorphic, monomorphic, T-UNITS: T-prominent,
MetricsLith size: 5->10µm; Segments: 5->5;
Sources: illustrated specimens
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: present in the plankton (Young et al. 2003)
First occurrence (base): within Cenomanian Stage (93.90-100.50Ma, base in Cenomanian stage). Data source: Burnett 1998

Plot of occurrence data:

  • (NB There is no histogram as there are no occurrence records for the taxon in the Neptune database) Parent: Braarudosphaera

    References:

    Bukry, D. (1969). Upper Cretaceous coccoliths from Texas and Europe. The University of Kansas Paleontological Contributions. Article 51 (Protista 2): 1-79. gs :: ::

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

    Deflandre, G. (1947a). Braarudosphaera nov. gen., type d'une famille nouvelle de Coccolithophorides actuels a elements composites. Comptes Rendus Hebdomadaires des Séances de l'Académie des Sciences, Paris. 225: 439-441. gs :: ::

    Górka, H. (1957). Les Coccolithophoridés du Maestrichtien supérieur de Pologne. Acta Palaeontologica Polonica. 2: 239-284. gs :: ::

    Gran, H. H. & Braarud, T. (1935). A quantitative study of the phytoplankton in the Bay of Fundy and the Gulf of Maine (including observations on hydrography, chemistry and turbidity). Journal of the Biological Board of Canada. 1: 279-467. gs :: ::

    Lees, J. A. (2007). New and rarely reported calcareous nannofossils from the Late Cretaceous of coastal Tanzania: outcrop samples and Tanzania Drilling Project Sites 5, 9 and 15. Journal of Nannoplankton Research. 29(1): 39-65. gs :: view :: open

    Linnert, C., Mutterlose, J. & Erbacher, J. (2010). Calcareous nannofossils of the Cenomanian/Turonian boundary interval from the Boreal Realm (Wunstorf, northwest Germany). Marine Micropaleontology. 74: 38-58. gs :: ::

    Manivit, H. (1966). Sur quelques coccolithes nouveaux du Néocomien. Compte Rendue Sommaire de la Société Géologique de France. 7: 267-268. gs :: ::

    Perez-Rodriguez, I., Lees, J. A., Larasoaña, J. C., Arz, J. A. & Arenillas, I. (2012). Planktonic foraminiferal and calcareous nannofossil biostratigraphy and magnetostratigraphy of the uppermost Campanian and Maastrichtian at Zumaia, northern Spain. Cretaceous Research. 37: 100-126. gs :: ::

    Thibault, N. (2010). Calcareous nannofossils from the boreal Upper Campanian- Maastrichtian chalk of Denmark. Journal of Nannoplankton Research. 31(1): 39-56. gs :: view :: open

    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 :: view :: open


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    Braarudosphaera bigelowii compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 4-6-2020

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    Short stable page link: http://mikrotax.org/Nannotax3/index.php?id=10103 Go to Archive.is to create a permanent copy of this page - citation notes



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