Discoaster salisburgensis


Classification: Coccolithophores -> Discoasterales -> Discoasteraceae -> Discoaster -> D. multiradiatus group -> Discoaster salisburgensis
Sister taxa: D. delicatus, D. multiradiatus, D. lenticularis, D. wemmelensis, D. mohleri, D. nobilis, D. salisburgensis, D. barbadiensis, D. spinescens, D. kuepperi, D. splendidus, D. diastypus, D. bifax,

Taxonomy:

Citation: Discoaster salisburgensis Stradner, 1961
Rank: Species
Variants:
Notes & discussion: Bralower & Self-Trail (2016) argue that D. salisburgensis intergrades with the anomalous PETM-associated "malformed" discoaster species D.anartios, D.areneus and D. acutus. They propose that those species should be regarded as varieties of D. saliburgensis and propose a further variety D. salisburgensis var. villosus.

Distinguishing features: Large to very large rosette-shaped discoasters with a prominent boss on one side only; 12-24 rays joined along most of their length with simple ray tips.

Farinacci & Howe catalog pages: Discoaster salisburgensis * , Discoaster circularis + * , Discoaster aecus * , Discoaster praebifax *

See also: D. araneus group - morphotypes associated with the PETM and derived from D. salisburgensis according to Bralower & Self-Trail (2016);

Search data:
TagsLITHS: nannolith-radiate, rosette-shaped, RIM: free-rays-short, PROCESS: boss,
CSPH: not known, V-UNITS: all, R-UNITS: none, DETAILS: 1ou,
MetricsLith size: 8->20µm; Segments: 10->14;
Sources: size from OD and specs illustrated in Bralower & Self-Trail 2016
The morphological data given here can be used on the advanced search page. See also these notes

Geological Range:
Last occurrence (top): within NP12 zone (50.50-53.70Ma, top in Ypresian stage). Data source: PRB entry to Nannotax
First occurrence (base): within NP9 zone (55.86-57.21Ma, base in Thanetian stage). Data source: PRB entry to Nannotax

Plot of occurrence data:

  • Histogram - Neptune occurrence data from DSDP and ODP proceedings. Pale shading <50 samples in time bin. Interpret with caution & read these notes
  • Note to users in China - the diagram may not plot unless you use a VPN since I use google services on the website. If this is a problem please contact me 谢谢.
  • Taxon plotted: Discoaster salisburgensis, synonyms included - Discoaster praebifax; Discoaster prebifax; Discoaster salisburgensis; Discoaster circularis;
  • space-time plot :: Samples map :: Parent: D. multiradiatus group

    References:

    Bown, P. R. & Dunkley Jones, T. (2012). Calcareous nannofossils from the Paleogene equatorial Pacific (IODP Expedition 320 Sites U1331-1334). Journal of Nannoplankton Research. 32(2): 3-51. gs

    Bown, P. R. (2005d). Palaeogene calcareous nannofossils from the Kilwa and Lindi areas of coastal Tanzania (Tanzania Drilling Project 2003-4). Journal of Nannoplankton Research. 27(1): 21-95. gs

    Bown, P. R. (2010). Calcareous nannofossils from the Paleocene/Eocene Thermal Maximum interval of southern Tanzania (TDP Site 14). Journal of Nannoplankton Research. 31: 11-38. gs

    Bralower, T. J. & Self-Trail, J. (2016). Nannoplankton malformation during the Paleocene-Eocene Thermal Maximum and its paleoecological and paleoceangraphic significance. Paleoceanography. 31: 1-17. gs

    Brönnimann, P. & Stradner, H. (1960). Die Foraminiferen- und Discoasteriden-zonen von Kuba und ihre interkontinentale Korrelation. Erdoel-Zeitschrift. 76(10): 364-369. gs

    Bybell, L. M. & Self-Trail, J. (1995). Evolutionary, biostratigraphic and taxonomic study of calcareous nanofossils from a continuous Palaeocene-Eocene boundary section in New Jersey. US Geological Survey professional paper. 1554: 1-36. gs

    Hoffmann, N. (1970b). Elektronenmikroskopische Untersuchungen an Discoasteriden aus dem Ober-Eozan der Bohrung Salzwedel 202/64 (Altmark). Hall. Jb. f. Mitteldt. Erdg.. 10: 7-26. gs

    Self-Trail, J. (2011). Paleogene Calcareous Nannofossils of the South Dover Bridge core, Southern Maryland (USA). Journal of Nannoplankton Research. 32(1): 1-28. gs

    Shamrock, J. L. & Watkins, D. K. (2012). Eocene calcareous nannofossil biostratigraphy and community structure from Exmouth Plateau, Eastern Indian Ocean (ODP Site 762). Stratigraphy. 9(1): 1-11. gs

    Shepherd, C. L. & Kulhanek, D. K. (2016). Eocene nannofossil biostratigraphy of the mid-Waipara River section, Canterbury Basin, New Zealand. Journal of Nannoplankton Research. 26(1): 33-59. gs

    Stradner, H. (1961). Vorkommen von Nannofossilien im Mesozoikum und Alttertiär. Erdoel-Zeitschrift. 77(3): 77-88. gs

    Wei, W. & Wise, S. W. (1989). Paleogene calcareous nannofossil magnetobiochronology: Results from South Atlantic DSDP Site 516. Marine Micropaleontology. 14: 119-152. gs


    nannotaxlogo400px

    Discoaster salisburgensis compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 8-12-2019

    Taxon Search:
    Advanced Search

    Short stable page link: http://mikrotax.org/Nannotax3/index.php?id=498 Go to Archive.is to create a permanent copy of this page - citation notes



    Comments (0)

    No comments yet. Be the first!

    Add Comment

    * Required information
    1000
    Captcha Image
    Powered by Commentics