Helicorhabdus asymetricus


Classification: Mesozoic -> Podorhabdales -> Biscutaceae -> Helicorhabdus -> Helicorhabdus asymetricus
Sister taxa: H. asymetricus, H. sp.,

Distinguishing features:

Helicorhabdus species with well-developed spine topped by an asymmetric plate-like calyx


Taxonomy:

Citation: Helicorhabdus asymetricus Lambert, 1987
Rank: Species

Farinacci & Howe catalog pages: H. asymetricus *

Distinguishing features:

Helicorhabdus species with well-developed spine topped by an asymmetric plate-like calyx

Search data:
TagsLITHS: placolith, asymmetric, circular, CA: process, closed, CROSS-POLARS: rim-unicyclic, V-prominent,
MetricsLith size: 1.5->2.5µm;
Data source notes: holotype +/- 0.5µm
The morphological data given here can be used on the advanced search page. See also these notes

See also: Discorhabdus hannibalis - this is possibly a junior synonym;

Geological Range:
Last occurrence (top): within Late Albian Substage (100.50-107.59Ma, top in Albian stage). Data source: Lambert, 1987 (original description)
First occurrence (base): within Late Albian Substage (100.50-107.59Ma, base in Albian stage). Data source: Lambert, 1987 (original description)

Plot of occurrence data:

References:

Lambert, B. (1987). Nannofossiles calcaires de l'Albien supérieur et du Vraconnien du Cameroun méridional. Cahiers de Micropaléontologie. 2(2): 33-60. gs V O

Lambert, B. (1993). Nannofossiles calcaires de l'Albien supérieur et du Vraconnien du Cameroun méridional (Deuxième Partie). Cahiers de Micropaléontologie. 8(2): 183-225. gs


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Helicorhabdus asymetricus compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 29-9-2020

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Short stable page link: http://mikrotax.org/Nannotax3/index.php?id=10514 Go to Archive.is to create a permanent copy of this page - citation notes



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