Chitinotax - ct_main - Orbichitininae Chitinotax - ct_main - Orbichitininae

Orbichitininae

NB This site is under active development


Classification: ct_main -> Desmochitinidae -> Orbichitininae
Sister taxa: Desmochitininae, Cutichitininae, Pterochitininae, Margachitininae, Einsenackitininae, Orbichitininae
Daughter taxa (time control age-window is: 0-800Ma)Granddaughter taxa
Orbichitina
subcylindrical to conical body and a crown of processes on the margin.
Orbichitina vulpiensis
Orbichitina sp.

Armigutta
ovoid chamber and a crown of processes on the margin.
Armigutta hillmeri
Armigutta sp.

Salopochitina
ovoid to sub cylindrical ornamented body; short lacinied carina located on the margin and extending anteaperturalward into filiform prolongations.
Salopochitina bella
Salopochitina filifera
Salopochitina monterrosae
Salopochitina sp.

Taxonomy

Citation: Orbichitininae Achab, Asselin & Soufiane, 1993
Taxonomic rank: subfamily
Basionym: Orbichitininae Achab, Asselin & Soufiane, 1993
Type species: Genus Orbichitina Achab, Asselin & Soufiane, 1993

Catalog entries: Orbichitininae

Original description: Diagnosis: Desmochitinidae bearing a ring of spines or processes at the basal margin of the chamber.

Distinguishing features:
Parent taxon (Desmochitinidae): no neck
This taxon: processes

NB These concise distinguishing features statements are used in the tables of daughter-taxa to act as quick summaries of the differences between e.g. species of one genus.
They are being edited as the site is developed and comments on them are especially welcome.

Description

Biogeography and Palaeobiology

Biostratigraphic distribution

Geological Range:
Last occurrence (top): at top of Early Devonian Period (100% up, 393.3Ma, in Eifelian stage). Data source: Total of ranges of the species in this database
First occurrence (base): within Middle Ordovician Epoch (458.18-471.26Ma, base in Dapingain stage). Data source: Total of ranges of species in this database

Plot of occurrence data:
NB The ranges given for genera and higher taxa are the total ranges of species included in that taxon in this database - so the true total range of the taxon will usually be longer

References:

Achab, A., Asselin, E. & Soufiane, A. (1993). New morphological characters observed in the Order Operculatifera and their implications for the suprageneric Chitinozoan classification. Palynology. 17: 1-9. gs


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Orbichitininae compiled by the Sonia Camino, viewed: 8-6-2026

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Short stable page link: https://mikrotax.org/Chitinotax/index.php?id=160014 Go to Archive.is to create a permanent copy of this page - citation notes



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