Nannotax3 - ntax_cenozoic

Nannotax3 - ntax_cenozoic - open-tube <title>Nannotax3 - ntax_cenozoic - open-tube

open-tube

Classification: ntax_cenozoic -> Holococcoliths -> open-tube
Sister taxa: tubeless, convex, bridged, flat-topped, septate, open-tube, fossil holococcoliths, U. extant holococcolith

Daughter taxa (time control age-window is: 0-800Ma)		Granddaughter taxa
	Calicasphaera Chalice-shaped coccoliths. Monomorphic	Calicasphaera bipora Calicasphaera blokii Calicasphaera concava Calicasphaera diconstricta Calicasphaera sp.
	Papposphaera HOL Tower-like holococcoliths formed from hexagonal crystallite groups.	Papposphaera arctica HOL Papposphaera polybotrys HOL Papposphaera sagittifera HOL Papposphaera sarion HOL Papposphaera sp. 2 (Turrisphaera phase) Papposphaera sp. 3 (Turrisphaera phase) Papposphaera sp. HOL
	Trigonaspis Holococcoliths formed of triangular crystallite groups (ca. 0.15 µm across), each composed of three (?hexagonal) sub-units. Dimorphic CFCs tower-like, BCs simple disks.	Pappomonas borealis HOL Trigonaspis melvillea Trigonaspis minutissima Pappomonas garrisonii HOL Trigonaspis sp.

Taxonomy:

Citation: Cup-shaped holococcoliths - informal grouping proposed by Young et al., 2003

Rank: informal group of genera

Distinguishing features:
Parent taxon (Holococcoliths): Haploid life-cycle stages, with liths formed of numerous rhombohedral microcrystals
This taxon: Holococcoliths with tube, open distally (or cover recessed)

Farinacci & Howe catalog pages: open-tube [no catalog entry yet]

Morphology:

Size:

Ecology & Biogeography

Biology & life-cycles

Phylogenetic relations

Search data:

: hollow,

Lith size: 0->0µm;

The morphological data given here can be used on the advanced search page. See also these notes

Geological Range:
Last occurrence (top): Extant. Data source: Total of range of species in this database
First occurrence (base): at top of No known fossil record modern (100% up, 0Ma, in "Holocene" stage). Data source: Total of range of species in this database

Plot of occurrence data:

Range-bar - range as quoted above, pink interval top occurs in, green interval base occurs in.
Triangles indicate an event for which a precise placement has been suggested
Neptune data: this is a higher taxon page so Neptune data is not plotted. For the customisable plot option go to a genus page Parent: Holococcoliths

References:

Young, J. R., Geisen, M., Cros, L., Kleijne, A., Probert, I. & Ostergaard, J. B. (2003). A guide to extant coccolithophore taxonomy. Journal of Nannoplankton Research. S1: 1-132. gs V O

open-tube compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 8-2-2023

Taxon Search:

Advanced Search

AphiaID: not found
Short stable page link: https://mikrotax.org/Nannotax3/index.php?id=960 Go to Archive.is to create a permanent copy of this page - citation notes

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