Nannotax3 - ntax_non_cocco - Tangential wall

Tangential wall


Classification: ntax_non_cocco -> Dinophytes -> Thoracosphaeraceae -> Tangential wall
Sister taxa: Tangential wall, Radial wall, Oblique wall, Possible Thoracosphaeraceae, Pithonellid, Calcispheres inc sedis, unidentified calcispheres

Distinguishing features:
Parent taxon (Thoracosphaeraceae): Calcareous dinoflagellates
This taxon: Wall formed of crystals with tangential c-axes (Thoracosphara s.l.)

Daughter taxa (time control age-window is: 0-800Ma)Granddaughter taxa
Calcigonellum

C. ansatum
C. granulatum
C. infula
C. minutum

Calciodinellum
Cysts with combination archaeopyle - formed from multiple plates and so with indented angular margin.
C. albatrosianum
C. levantinum
C. clamosum
C. elongatum
C. kerguelense
C. limbatum
C. operosum
C. sp.

Centosphaera

C. barbata

Cervisiella
Spherical, with circular archaeopyle, no paratabulation. Wall structure irregular with tangential c-axes.
C. operculata
C. saxea
C. sp.

Fuettererella
Wall structure with radial fabric but tangential c-axes ("pseudoorthopithonellid")
F. belliata
F. conforma
F. deflandrei
F. elliptica
F. flora
F. fungiforma
F. sp.
F. tesserula

Lebessphaera
Cysts with tangential wall-structure and epicystal archaeopyles
L. sp.
L. urania

Operculodinella
Like Cervisiella but with paratabulation
O. costata
O. hydria
O. reticulata

Scrippsiella
Cysts with tangential wall structure and compound archaeopyles. Wall formed of largish non-intelocking elements each with a spine

Thoracosphaera

T. wombatensis
T. heimii
T. eichstaettensis
T. prolata
T. sp.

Taxonomy:

Synonyms:

Taxonomic discussion:
Generic classification within this group is now primarily based on the archaeopyle type - i.e. the number of plates interpreted to have formed the archaeopyle, largely following Streng et al. (2004). Nannofosil workers havetraditionally inlcuded most of these in Thoracosphaera

Catalog entries: Tangential wall [no catalog entry yet]

Distinguishing features:
Parent taxon (Thoracosphaeraceae): Calcareous dinoflagellates
This taxon: Wall formed of crystals with tangential c-axes (Thoracosphara s.l.)

Geological Range:
Last occurrence (top): Extant Data source: Total of range of species in this database
First occurrence (base): within Carnian Stage (228.35-237.00Ma, base in Carnian stage). Data source: Total of range of species in this database

References:


nannotaxlogo400px

Tangential wall compiled by Jeremy R. Young viewed: 7-12-2021

Taxon Search:
Advanced Search

Short stable page link: https://mikrotax.org/Nannotax3/index.php?id=20461 Go to Archive.is to create a permanent copy of this page - citation notes



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
1000
Captcha Image
Powered by Commentics