Nannotax3 - ntax_Farinacci - Zygostephanos

CATALOG - Zygostephanos


Folder trail: ntax_Farinacci -> Z -> Zygostephanos
Folders this level: Zebrashapka, Zeugrhabdotus, Zygodiscus, Zygolithites, Zygolithus, Zygosphaera, Zygostephanos, Zygrhablithus

Original descriptions of taxa. For coccolithophores, and many calcispheres, these are pages from the Farinacci & Howe Catalog of Calcareous Nannofossils. In other cases (e.g. non-calcifying haptophytes) the data is directly compiled on this site. The "Catalogue of Calcareous Nannofossils" was originally compiled by Prof A. Farinacci 1969-1989, since 2000 it has been updated and extended by Richard Howe - see The Farinacci and Howe Catalog - an Introduction.
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Zygostephanos frondosus Hoffman 1970



Current identification/main database link: Staurolithites Caratini, 1963

Compiled data

Citation: Zygostephanos Hoffmann 1970
Rank: Genus
Type species: Discolithus crux Deflandre & Fert, 1952
Language: DE
Farinacci catalog page (& compiler): 7249
Current citation: Staurolithites Caratini, 1963


Original Description

Elliptische "Zygolithen" mit einem relativ hohen, sich proximal verengenden Rand, den dachziegelartig angeordnete Randblättchen aufbauen. Ein Kranz aus plattigen Elementen bedech die Randblättchen proximal zum Teil gänzlich. Kreuzförmig oder brückenartig angeordnete Stege überspannen das Zentralfeld. Sie liegen mit dem proximalen Rand in ± einer Höhe, während sie distal vom Rand wallartig umgeben werden. Das meist erhabene Zentrum der Stege kann distal einen Zentralfortsatz oder Knopf tragen.


approximate translation
Elliptical "zygoliths" with a relatively high, proximally narrowing rim, which are built up by rim elements arranged like roof tiles. A wreath of plate-like elements covers the rim elements on the proximal side in part completely. Cross-shaped or bridge-like bars span the central field. They lie with the proximal edge at ± the same height, while they are surrounded distally by the edge like a wall. The mostly raised center of the bars can have a central process or button distally.

Size:

Etymology:

Extra details from original publication

Editors' Notes
This genus was proposed based on recognising the similar structure of numerous diferent loxolith coccoliths, but ignored the fact that it was an objective junior synonym of other genera. i.e. it appears that the author mistakenly assumed that because he had a novel generic concept he needed to also coin a new generic name. [my interpretation - JRY 2021]

References:

Hoffmann, N. (1970e). Taxonomische Untersuchungen an Coccolithen aus der Kreide Norddeutchlands anhand elektronenmikroskopischer Aufnamen. Hercynia. 7(1-3): 163-198. gs V O


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Zygostephanos: Catalog entry compiled by Anna Farinacci. Viewed: 5-10-2022

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Short stable page link: https://mikrotax.org/Nannotax3/index.php?id=50506 Go to Archive.is to create a permanent copy of this page - citation notes
Link to WoRMS (World Register of Marine Species)

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