Nannotax3 - ntax_mesozoic - Braarudosphaera bigelowii

Braarudosphaera bigelowii


Classification: ntax_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:
Parent taxon (Braarudosphaera): Pentaliths with trapezoidal segments and sutures that go to edges of the pentagon.
This taxon: Braarudosphaera with pentagonal outline.


Taxonomy:

Citation: Braarudosphaera bigelowii (Gran & Braarud, 1935) Deflandre, 1947
Rank: Species
Basionym: Pontosphaera bigelowii Gran & Braarud, 1935
Synonyms:
Variants: Although separately described both names refer to forms with imbricate elements.
Taxonomic 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: P. bigelowi * , M. lidiae * , B. imbricata *

Distinguishing features:
Parent taxon (Braarudosphaera): Pentaliths with trapezoidal segments and sutures that go to edges of the pentagon.
This taxon: Braarudosphaera with pentagonal outline.


Morphology:


Size:


Ecology & Biogeography


Biology & life-cycles

Phylogenetic relations

Search data:
LITHS: nannolith-radiate, pentagonal, CA: closed,
CSPH: equant, BC-dimorphic, monomorphic, CROSS-POLARS: T-prominent,
Lith size: 5->10µm; Segments: 5->5;
Data source notes: illustrated specimens
The morphological data given here can be used on the advanced search page. See also these notes

See also: Braarudosphaera bigelowii - Cenozoic page, this is one of the very few species to occur commonly in both the Mesozoic and Cenozoic;

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:

References:

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

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

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 V O

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

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. & Schueth, J. (2020). Taxonomic note – New Upper Cretaceous nannofossil taxa from the Turonian of New Mexico, USA. Journal of Nannoplankton Research. 30(1): 81-82. gs V O

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 O

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 Rendu Sommaire des Séances de la Société Géologique de France. 7: 267-268. gs V O

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

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

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


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Braarudosphaera bigelowii compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 3-12-2022

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