Reticulofenestra hampdenensis


Classification: Coccolithophores -> Isochrysidales -> Noelaerhabdaceae -> Reticulofenestra -> R. umbilicus group -> Reticulofenestra hampdenensis
Sister taxa: R. umbilicus, R. dictyoda, R. hillae, R. hampdenensis, R. hesslandii, R. moorei, R. circus, R. circus var. lata, R. wadeae, R. maceria Shafik 1989, R. oamaruensis,

Taxonomy:

Citation: Reticulofenestra hampdenensis Edwards, 1973
Rank: Species
Notes & discussion: Simlar to R. dictyoda but with a broader central opening.

Distinguishing features: Medium sized, elliptical reticulofenestrid with broad central area.

Farinacci & Howe catalog pages: Reticulofenestra hampdenensis *


Morphology remarks: EM of type material shows grill (with laths and central perforate net).

Search data:
TagsLITHS: placolith, elliptical, CA: grill, vacant,
CSPH: spherical, monomorphic, V-UNITS: none, R-UNITS: all, c-str, distal shield, prox shield, tube, DETAILS: ca_conjunct, isogyres kinked, isogyres oblique, rim-unicyclic,
MetricsLith size: 4->8┬Ám;
Sources:
The morphological data given here can be used on the advanced search page. See also these notes

Geological Range:
Notes: Described from New Zealand, Bortonian Stage (approximately equivalent to top half of Lutetian)
Last occurrence (top): within Late Eocene Sub-Epoch (33.89-37.75Ma, top in Priabonian stage). Data source: [PRB rough estimate]
First occurrence (base): within Middle Eocene Sub-Epoch (37.75-47.84Ma, base in Lutetian stage). Data source: [PRB rough estimate]

Plot of occurrence data:

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

    References:

    de Kaenel, E. & Villa, G. (1996). Oligocene-Miocene calcareous nannofossil biostratigraphy and paleoeecology from the Iberian Abyssal Plain. Proceedings of the Ocean Drilling Program. Scientific Results. 149: 79-145. gs

    Edwards, A. R. (1973). Key species of New Zealand calcareous nannofossils. New Zealand Journal of Geology and Geophysics. 16: 68-89. 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


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    Reticulofenestra hampdenensis compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 23-9-2019

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    Short stable page link: http://mikrotax.org/Nannotax3/index.php?id=1163 Go to Archive.is to create a permanent copy of this page - citation notes



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