Broinsonia parca

Classification: Mesozoic -> Arkhangelskiales -> Arkhangelskiellaceae -> Broinsonia -> Broinsonia parca
Sister taxa: B. parca, B. enormis, B. furtiva, B. gammation, B. verecundia, B. dentata, B. cenomanica, B. ethmoquadrata, B. signata, B. galloisii, B. matalosa, B. viriosa, B. sp.,

Distinguishing features: central structure perforate plate; rim broad

Daughter taxa: (blue => in age window 0-800Ma)
Broad central plate; plate width >2 x margin width
Intermediate width central plate; plate width 1-2 x margin width
Narrow central plate; plate width <1 x margin width


Citation: Broinsonia parca (Stradner, 1963) Bukry, 1969
Rank: Species
Basionym: Arkhangelskiella parca Stradner, 1963
Notes & discussion: This is a stratigraphically useful lineage, it is discussed in detail in Hattner et (1980) and Wise (1983) and the sub-species definitions follow those works.

Farinacci & Howe catalog pages: Arkhangelskiella parca *

Distinguishing features: central structure perforate plate; rim broad

Morphology remarks: In well-preserved specimens of all three sub-species there are often 3 - 5 delicat radial bars at the base of each pore.

Geological Range:
Last occurrence (top): within Campanian Stage (72.05-83.64Ma, top in Campanian stage). Data source: Burnett 1998
First occurrence (base): within Coniacian Stage (86.26-89.77Ma, base in Coniacian 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: Broinsonia


    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

    Hattner, J. G., Wind, F. H. & Wise, S. W. (1980). The Santonian-Campanian boundary: comparison of nearshore-offshore calcareous nannofossil assemblages. Cahiers de Micropaléontologie. 3: 9-26. gs

    Stradner, H. (1963). New contributions to Mesozoic stratigraphy by means of nannofossils. Proceedings of the Sixth World Petroleum Congress. Section 1 Paper 4: 167-183. gs

    Wise, S. W. (1983). Mesozoic and Cenozoic calcareous nannofossils recovered by DSDP Leg 71 in the Falkland Plateau region, Southwest Atlantic Ocean. Initial Reports of the Deep Sea Drilling Project. 71: 481-550. gs


    Broinsonia parca compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 24-10-2019

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