Nannotax3 - ntax_mesozoic - Lithastrinus pentabrachius

Lithastrinus pentabrachius


Classification: ntax_mesozoic -> Braarudosphaerales -> Polycyclolithaceae -> Lithastrinus -> Lithastrinus pentabrachius
Sister taxa: L. quadricuspis, L. pentabrachius, L. grillii, L. septenarius, L. sp.

Distinguishing features:
Parent taxon (Lithastrinus): Eprolithids with two cycles of five to seven ray-like, curved, wall-cycle elements surrounding a narrow median diaphragm.
This taxon: Lithastrinus with five petaloid wall-elements


Taxonomy:

Citation: Lithastrinus pentabrachius Varol, 1992
Rank: Species

Farinacci & Howe catalog pages: L. pentabrachius *

Distinguishing features:
Parent taxon (Lithastrinus): Eprolithids with two cycles of five to seven ray-like, curved, wall-cycle elements surrounding a narrow median diaphragm.
This taxon: Lithastrinus with five petaloid wall-elements


Morphology:


Size:

Most likely ancestor: Lithastrinus grillii - at confidence level 3 (out of 5). Data source: Varol 1992.
Likely descendants: Lithastrinus quadricuspis; plot with descendants

Search data:
LITHS: nannolith-radiate, pentagonal, star-shaped, CA: closed, CROSS-POLARS: T-prominent,
Lith size: 5->15┬Ám; Segments: 5->5;
Data source notes: original description
The morphological data given here can be used on the advanced search page. See also these notes

Geological Range:
Last occurrence (top): within Campanian Stage (72.05-83.64Ma, top in Campanian stage). Data source: Varol, 1992 (original description)
First occurrence (base): within Campanian Stage (72.05-83.64Ma, base in Campanian stage). Data source: Varol, 1992 (original description)

Plot of occurrence data:

References:

Varol, O. (1992b). Taxonomic revision of the Polycyclolithaceae and its contribution to Cretaceous biostratigraphy. Newsletters on Stratigraphy. 27(93-127): -. gs


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Lithastrinus pentabrachius compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 25-9-2022

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Short stable page link: https://mikrotax.org/Nannotax3/index.php?id=10571 Go to Archive.is to create a permanent copy of this page - citation notes



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