Cervisiella


Classification: non_cocco -> Dinophytes -> Thoracosphaeraceae -> Tangential wall -> Cervisiella
Sister taxa: Calcigonellum, Calciodinellum, Centosphaera, Cervisiella, Fuettererella, Lebessphaera, Operculodinella, Scrippsiella, Thoracosphaera,

Distinguishing features: Spherical, with circular archaeopyle, no paratabulation. Wall structure irregular with tangential c-axes.

Daughter taxa: (blue => in age window 0-800Ma)



Taxonomy:

Citation: Cervisiella Hildebrand-Habel, H. Willems & Versteegh 1999
Rank: Genus
Type species: Cervisiella saxea (Stradner) Hildebrand-Habel, Willems & Versteegh 1999
Notes & discussion: The name Cervisiella is derived from the Latin for beer Cervisia (Hildebrand-Habel et al. 1999)

Catalog entries: Cervisiella

Distinguishing features: Spherical, with circular archaeopyle, no paratabulation. Wall structure irregular with tangential c-axes.

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.

Geological Range:
Last occurrence (top): within Serravallian Stage (11.62-13.82Ma, top in Serravallian stage). Data source: Total of range of species in this database
First occurrence (base): within Maastrichtian Stage (66.04-72.05Ma, base in Maastrichtian stage). Data source: Total of range of species in this database

References:

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


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Cervisiella compiled by Jeremy R. Young viewed: 13-12-2019

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Short stable page link: http://mikrotax.org/Nannotax3/index.php?id=20069 Go to Archive.is to create a permanent copy of this page - citation notes



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