Nannotax3 - ntax_Farinacci - Cervisiella

CATALOG - Cervisiella

Folder trail: ntax_Farinacci -> Calcispheres -> Cervisiella
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

Current identification/main database link: Cervisiella Hildebrand-Habel, H. Willems & Versteegh 1999

Compiled data

Citation: Cervisiella Hildebrand-Habel et al. 1999
Rank: Genus
Type species: Thoracosphaera saxea Stradner, 1961
Farinacci catalog page (& compiler): n/a
Current citation: Cervisiella Hildebrand-Habel, H. Willems & Versteegh 1999

Original Description

Spherical calcareous dinoflagellate cysts with circular archaeopyles, not showing paratabulation. The outer calcareous wall consists of irregularly shaped and arranged crystallites. Under the light microscope in crossed nicols and with gypsum plate, thin sections exhibit clear interference colours and have a positive optic sign, thus indicating tangentially oriented c-axes.


Latin, cervisia, beer.

Extra details from original publication
Remarks: Stradner (1961) described Thoracosphaera saxea, based on light microscope examinations, from Danian sediments of Austria. Keupp (1987) discovered corresponding Albian specimens in SEM-samples and concluded that specimens identical with the Cenozoic forms have to be assigned to the genus ‘Obliquipithonella’. The combination ‘Obliquipithonella saxea’ was never validly published, however. Our study revealed that thin sections of Thoracosphaera saxea exhibit a positive optic sign under the light microscope in crossed nicols and with gypsum plate. As the interference colours can be explained by a tangential orientation of the c-axis of each crystal, a new genus has to be established, combining all features recognizable under both SEM and light microscope examination.

Editors' Notes


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


Cervisiella: Catalog entry compiled by Jeremy Young. Viewed: 30-9-2022

Taxon Search:
Advanced Search

Short stable page link: Go to to create a permanent copy of this page - citation notes
Link to WoRMS (World Register of Marine Species)

Comments (0)

No comments yet on this page. Please do add comments if you spot any problems, or have information to share

Add Comment

* Required information
Captcha Image
Powered by Commentics