Lanternithus unicavus


Classification: ntax_cenozoic -> Holococcoliths -> fossil holococcoliths -> Lanternithus -> Lanternithus unicavus
Sister taxa: L. arcanus, L. duocavus, L. jawzii, L. minutus, L. procerus, L. simplex, L. unicavus, M. emrei, L. sp.

Taxonomy:

Citation: Lanternithus unicavus Bown 2016
Rank: Species
Synonyms: Lanternithus sp. II, Varol (1998)

Distinguishing features: Small, elliptical holococcoliths with two small blocks at either end of the lith and a circular central hole or depression, which is dark in XPL. In XPL, the blocks are relatively dark when the coccolith is orientated at 0° and brightest at 45°.

Farinacci & Howe catalog pages: L. unicavus *


Morphology: Small, elliptical holococcoliths with two small blocks at either end of the lith and a circular central hole or depression, which is dark in XPL. In XPL, the blocks are relatively dark when the coccolith is orientated at 0° and brightest at 45°. Differentiation: Differentiated from other Lanternithus by the single central hole and small, distinct blocks at each end of the coccolith.  [Bown 2016]

Size: Holotype dimensions: L = 3.5μm

Search data:
TagsLITHS: holococcolith, elliptical, CROSS-POLARS: R-prominent,
MetricsLith size: 3->4µm; Segments: 5->7;
Data source notes: lith size from OD and illustrated specs
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:

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

Varol, O. (1998). Palaeogene. In, Bown, P. R. (ed.) Calcareous Nannofossil Biostratigraphy. British Micropalaeontological Society Publication Series. 200-224. gs


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Lanternithus unicavus compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 24-2-2021

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Short stable page link: https://mikrotax.org/Nannotax3/index.php?id=796 Go to Archive.is to create a permanent copy of this page - citation notes



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