Lanternithus arcanus

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


Citation: Lanternithus arcanus Bown, 2005
Rank: Species

Distinguishing features: Medium sized holococcolith comprising several distinct crystallographic blocks that change appearance on rotation in XPL. At 0° six blocks are visible, four major quadrants, alternating dark and light, delineated by axial sutures, and one small block at each end. At 5° the four quadrants are bright and a small pore is visible in the centre. At 45° the coccolith is bright and crossed by diagonal extinction lines.

Farinacci & Howe catalog pages: L. arcanus *

Search data:
TagsLITHS: holococcolith, elliptical, polygonal, hollow, CROSS-POLARS: R-prominent,
MetricsLith size: 4.6->5.5µm;
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 NP15c subzone (42.87-44.12Ma, top in Lutetian stage). Data source: Bown 2005
First occurrence (base): within NP15b subzone (44.12-45.49Ma, base in Lutetian stage). Data source: Bown 2005

Plot of occurrence data:


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 V O


Lanternithus arcanus compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 11-4-2021

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