Nannotax3 - ntax_Farinacci - Eoconusphaeraceae Nannotax3 - ntax_Farinacci - Eoconusphaeraceae

CATALOG - Eoconusphaeraceae


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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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Current identification/main database link: Eoconusphaeraceae Kristan-Tollmann, 1988

Compiled data

Citation: Eoconusphaeraceae Kristan-Tollmann, 1988
taxonomic rank: Family
Type species: Eoconusphaera Jafar, 1983
Current citation: Eoconusphaeraceae Kristan-Tollmann, 1988


Original Description

Diagnose: Nannofossilien in Form von länglichen, abge-stutzten Kegeln oder Körben von rundem bis elliptischem Querschnitt, die aus einer äußeren Lage von vertikal nebeneinander stehenden, nicht übergreifenden, dünnen Latten bestehen und einem inneren Körper, der den zentralen Raum meist ganz ausfüllt. Dieser innere K per wird aus einem oder mehreren Zyklen ebenfalls langer dünner Latten gebildet, die senkrecht oder spindelförmig gedreht radial zur Längsachse angeordnet sind. Die radiale Lage dieser inneren Elemente kann modifiziert sein wie z. B. bei E. zlambachensis und E. jansae, wo die Latten in Sektoren aufgeteilt sind: Je einer radialen Latte folgen einige weitere Latten parallel, naturgemäß gegen außen hin kürzer wer-dend. Sie sind im Uhrzeigersinn angeordnet. Der Axialka-nal ist dünn, oft am Distalende nicht zu sehen, oder nicht vorhanden. Spezielle proximale Platten, Stege oder Kreuze sind nicht ausgebildet.

[google translation, 2024]
Diagnosis: Nannofossils in the form of elongated, truncated cones or baskets with a round to elliptical cross-section, which consist of an outer layer of vertically adjacent, non-overlapping, thin slats and an inner body that usually completely fills the central space. This inner body is formed from one or more cycles of long, thin slats, which are arranged vertically or spindle-shaped and rotated radially to the longitudinal axis. The radial position of these inner elements can be modified such as: E.g. in E. zlambachensis and E. jansae, where the slats are divided into sectors: Each radial slat is followed by several more slats in parallel, naturally becoming shorter towards the outside. They are arranged clockwise. The axial canal is thin, often not visible or absent at the distal end. There are no special proximal plates, bars or crosses.

Extra details from original publication
Included genera: Eoconusphaera JAFAR, 1983 (Syn.: Calcivascularis WIEGAND, 1984); Conusphaera TREJO, 1969.

Range: Upper Triassic (Norian) to Lower Cretaceous (Aptian).

References:

Jafar, A. S. (1983). Significance of Late Triassic calcareous nannoplankton from Austria and Southern Germany. Neues Jahrbuch für Geologie und Paläontologie, Abhandlungen. 166: 218-259. gs

Kristan-Tollmann, E. (1988). Coccolithen aus den Älteren Allgäuschichten (Alpiner Lias, Sinemur) von Timor, Indonesien. Geologisch-Paläontologische Mitteilungen Innsbruck. 15: 71-83. gs


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Eoconusphaeraceae: Catalog entry compiled by <% compiler %>. Viewed: 12-10-2024

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