Nannotax3 - ntax_cenozoic

Octolithus

Classification: ntax_cenozoic -> Holococcoliths -> fossil holococcoliths -> Octolithus
Sister taxa: Clathrolithus, Corannulus, Daktylethra, Holodiscolithus, Lanternithus, Multipartis, Octolithus, Orthozygus, Quadrilateris, Semihololithus, Varolia, Youngilithus, Zygrhablithus, Unidentified fossil holococcoliths

Daughter taxa (time control age-window is: 0-800Ma)
				Octolithus multiplus Holococccolith with four main blocks and two smaller blocks at either end.
				Octolithus sp. Specimens which cannot be assigned to any established species

Taxonomy:

Citation: Octolithus Romein, 1979

Rank: Genus

Type species: Octolithus multiplus (Perch-Nielsen, 1973) Romein, 1979 [Tetralithus]

Distinguishing features: Holoccoliths with distinct rim and cover blocks, typically eight.

Farinacci & Howe catalog pages: Octolithus *

Search data:

Tags	LITHS: holococcolith, elliptical, CROSS-POLARS: R-prominent,
Metrics	Lith size: 4.5->5.5µm; Segments: 5->7;

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

Geological Range:
Last occurrence (top): at base of Selandian Stage (4% up, 61.5Ma, in Selandian stage). Data source: Total of range of species in this database
First occurrence (base): at base of Campanian Stage (0% up, 83.6Ma, in Campanian stage). Data source: Total of range of species in this database

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
Neptune data: This is a higher taxon page so Neptune data is not plotted. See also: customisable plot Parent: fossil holococcoliths

References:

Burnett, J. A. (1998). Upper Cretaceous. In, Bown, P. R. (ed.) Calcareous Nannofossil Biostratigraphy. British Micropalaeontological Society Publication Series. 132-199. gs V O

Romein, A. J. T. (1979). Lineages in Early Paleogene calcareous nannoplankton. Utrecht Micropaleontological Bulletin. 22: 1-231. gs V O

Octolithus compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 13-4-2021

Taxon Search:

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Short stable page link: https://mikrotax.org/Nannotax3/index.php?id=952 Go to Archive.is to create a permanent copy of this page - citation notes

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