Reticulofenestra macmillanii


Classification: Coccolithophores -> Isochrysidales -> Noelaerhabdaceae -> Reticulofenestra -> R. lockeri group -> Reticulofenestra macmillanii
Sister taxa: R. daviesii, R. gartneri, R. lockeri, R. macmillanii, R. onusta, R. martinii,

Taxonomy:

Citation: Reticulofenestra macmillanii Dunkley Jones, Bown & Pearson, 2009
Rank: Species

Distinguishing features: Small with wide central area, net thicker in centre

Farinacci & Howe catalog pages: Reticulofenestra macmillanii *


Morphology remarks: Small elliptical reticulofenestrids with a narrow rim and a very wide central area (~3x width of the rim) spanned by a weakly birefringent net the outer edge of which is less heavily calcified than the central part.

Size: Holotype length 4.7 microns

Search data:
TagsLITHS: placolith, elliptical, CA: grill, pores, closed,
CSPH: spherical, equant, monomorphic, V-UNITS: none, R-UNITS: all, c-str, distal shield, prox shield, tube, R-prominent, DETAILS: ca_conjunct, isogyres kinked, isogyres oblique, rim-unicyclic,
MetricsLith size: 3->5µm;
Sources:
The morphological data given here can be used on the advanced search page. See also these notes

Geological Range:
Last occurrence (top): within NP21 zone (32.92-34.44Ma, top in Rupelian stage). Data source: Dunkley Jones et al., 2009
First occurrence (base): within NP19-20 zone (34.44-36.97Ma, base in Priabonian stage). Data source: Dunkley Jones et al., 2009

Plot of occurrence data:

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

    References:

    Bown, P. R. & Newsam, C. (2017). Calcareous nannofossils from the Eocene North Atlantic Ocean (IODP Expedition 342 Sites U1403–1411). Journal of Nannoplankton Research. 37(1): 25-60. gs :: view :: open

    Dunkley Jones, T., Bown, P. R. & Pearson, P. (2009). Exceptionally well preserved upper Eocene to lower Oligocene calcareous nannofossils (Prymnesiophycidae) from the Pande Formation (Kilwa Group), Tanzania. Journal of Systematic Palaeontology. 7(4): 359-411. gs :: ::


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    Reticulofenestra macmillanii compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 29-5-2020

    Taxon Search:
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    Short stable page link: http://mikrotax.org/Nannotax3/index.php?id=1171 Go to Archive.is to create a permanent copy of this page - citation notes



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