Nannotax3 - ntax_cenozoic - Ericsonia monilis

Ericsonia monilis

Classification: ntax_cenozoic -> Coccolithales -> Coccolithaceae -> Ericsonia -> Ericsonia monilis
Sister taxa: E. monilis, E. subpertusa, E. media ⟩⟨ E. orbis, E. staerkeri, E. aliquanta, E. robusta, E. sp.

Bown-JNR2016-pl11-02.JPG
Bown-JNR2016-pl11-03.JPG
Bown-JNR2016-pl11-01.JPG

Taxonomy:

Citation: Ericsonia monilis Bown 2016

Rank: Species

Distinguishing features: very small (~3μm), circular with raised distal collar and tall proximal shield

Farinacci & Howe catalog pages: E. monilis *

Morphology: Very small, circular coccolith with Ericsonia-like structure, but the distal shield elements form a distinct raised collar, the inner tube cycle is in a depression around the open central area and the proximal shield appears to be narrow and relatively tall.
The central area width is similar to that of the rim width. The species has been observed on rock surfaces in SEM, including concentrations that likely represent collapsed coccospheres. [Bown 2016]

Search data:

Tags	LITHS: placolith, circular, CA: vacant, CSPH: equant, monomorphic, CROSS-POLARS: rim-bicyclic, V-prominent, R-prominent,
Metrics	Lith size: 2->4µm; Data source notes: lith size from OD

The morphological data given here can be used on the advanced search page. See also these notes

Geological Range:
Last occurrence (top): within NP5 zone (59.54-61.51Ma, top in Selandian stage). Data source: Bown 2016
First occurrence (base): within NP5 zone (59.54-61.51Ma, base in Selandian stage). Data source: Bown 2016

Plot of occurrence data:

Range-bar - range as quoted above, pink interval top occurs in, green interval base occurs in.
Triangles indicate an event for which a precise placement has been suggested
(NB There is no histogram as there are no occurrence records for the taxon in the Neptune database) Parent: Ericsonia

References:

Bown, P. R. (2016). Paleocene calcareous nannofossils from Tanzania (TDP sites 19, 27 and 38). Journal of Nannoplankton Research. 36(1): 1-32. gs V O

Ericsonia monilis compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 28-2-2021

Taxon Search:

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Short stable page link: https://mikrotax.org/Nannotax3/index.php?id=553 Go to Archive.is to create a permanent copy of this page - citation notes

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