Nannotax3 - ntax_non_cocco - Tangential wall

Nannotax3 - ntax_non_cocco - Tangential wall 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	Calcigonellum ansatum Calcigonellum granulatum Calcigonellum infula Calcigonellum minutum
	Calciodinellum Cysts with combination archaeopyle - formed from multiple plates and so with indented angular margin.	Calciodinellum albatrosianum Calciodinellum levantinum Calciodinellum clamosum Calciodinellum elongatum Calciodinellum kerguelense Calciodinellum limbatum Calciodinellum operosum Calciodinellum sp.
	Centosphaera	Centosphaera barbata
	Cervisiella Spherical, with circular archaeopyle, no paratabulation. Wall structure irregular with tangential c-axes.	Cervisiella operculata Cervisiella saxea Cervisiella sp.
	Fuettererella Wall structure with radial fabric but tangential c-axes ("pseudoorthopithonellid")	Fuettererella belliata Fuettererella conforma Fuettererella deflandrei Fuettererella elliptica Fuettererella flora Fuettererella fungiforma Fuettererella sp. Fuettererella tesserula
	Lebessphaera Cysts with tangential wall-structure and epicystal archaeopyles	Lebessphaera sp. Lebessphaera urania
	Operculodinella Like Cervisiella but with paratabulation	Operculodinella costata Operculodinella hydria Operculodinella reticulata
	Scrippsiella Cysts with tangential wall structure and compound archaeopyles. Wall formed of largish non-intelocking elements each with a spine	Scrippsiella crystallina Scrippsiella lachrymosa Scrippsiella minima Scrippsiella patagonica Scrippsiella precaria Scrippsiella rotunda Scrippsiella sweeneyae Scrippsiella trifida Scrippsiella triquetracapitata Scrippsiella acuminata Scrippsiella regalis Scrippsiella fragments Scrippsiella sp.
	Thoracosphaera	Thoracosphaera wombatensis Thoracosphaera heimii Thoracosphaera eichstaettensis Thoracosphaera prolata Thoracosphaera 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 ranges of the species in this database
First occurrence (base): within Late Triassic Epoch (201.36-237.00Ma, base in Carnian stage). Data source: Total of ranges of species in this database

References:

Tangential wall compiled by Jeremy R. Young viewed: 16-10-2024

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