Nannotax3 - ntax_mesozoic - Helicorhabdus asymetricus

Helicorhabdus asymetricus

Classification: ntax_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

Lambert1987-pl11-1.JPG
Lambert1987-pl11-2.JPG
Lambert93fig13-2.JPG

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:

Tags	LITHS: placolith, asymmetric, circular, CA: process, closed, CROSS-POLARS: rim-unicyclic, V-prominent,
Metrics	Lith 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:

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: Helicorhabdus

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

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

Taxon Search:

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Short stable page link: https://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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