Nannotax3 - ntax_Farinacci - Retesphaera Nannotax3 - ntax_Farinacci - Retesphaera

CATALOG - Retesphaera

Folder trail: ntax_Farinacci -> Calcispheres -> Retesphaera
Folders this level: Asterosphaerella, Bonetocardiella, Cadosina, Cadosinella, Calcigonellum, Calciodinellum, Carinellum, Carpistomiosphaera, Cervisiella, Colomisphaera, Favolithora, Hemistomiosphaera, Kainoconus, Lebessphaera, Nephrodinella, Obliquipithonella, Orthopithonella, Palinosphaera, Parastomiosphaera, Pithonella, Retesphaera, Scrippsiella, Stomiosphaera, Thoracosphaera

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.
Taxa are sorted alphabetically for simple browsing, or you can use search boxes at the top & bottom of the page

Retesphaera diadema Hildebrand-Habel et al. 1999

Current identification/main database link: Retesphaera Hildebrand-Habel, Willems & Versteegh 1999

Compiled data

Citation: Retesphaera Hildebrand-Habel, Willems & Versteegh 1999
taxonomic rank: Genus
Type species: Retesphaera diadema Hildebrand-Habel, Willems & Versteegh 1999
Standardised type level: 080_UPPER CRETACEOUS
Farinacci catalog page (& compiler): n/a
Current citation: Retesphaera Hildebrand-Habel, Willems & Versteegh 1999

Original Description

Monocarinate calcareous dinoflagellate cysts charac- terized by a spherical to antapically, conically lengthened central body. A circlet-like rim of coarser crystallites frames the apical side of the central body. The single-layered wall consists of small idiomorphous rhombohedrons in irregular orientation. The crystallites are arranged around pores, thus forming reticular distal and proximal surface sculptures. The circular archaeopyle has an apical orientation and is probably formed by the release of the paraplate 3'.

Latin, rete, net; Greek, sphaira, sphere. Based on the reticular surface structure of the basically spherical central body of the cysts.

Extra details from original publication
Remarks: This genus differs from other reticulate sculptured genera in the monocarinate shape and the frequently occurring conically lengthened hypocyst. Only one species, Retesphaera diadema, is known.


Hildebrand-Habel, T., Willems, H. & Versteegh, G. J. M. (1999). Variations in calcareous dinoflagellate associations from the Maastrichtian to Middle Eocene of the western South Atlantic Ocean (São Paulo Plateau, DSDP Leg 39, Site 356). Review of Palaeobotany and Palynology. 106: 57-87. gs


Retesphaera: Catalog entry compiled by Jeremy Young. Viewed: 4-12-2023

Taxon Search:
Advanced Search

Short stable page link: Go to to create a permanent copy of this page - citation notes

Nannotax is being sponsored through 2024 by Woodside Energy and Shell USA

Add Comment

* Required information
Captcha Image
Powered by Commentics


No comments yet. Be the first!