Nannotax3 - ntax_cenozoic

Nannotax3 - ntax_cenozoic - Calciarcus Nannotax3 - ntax_cenozoic - Calciarcus

Calciarcus

Classification: ntax_cenozoic -> Holococcoliths -> tubeless -> tubeless-minute -> Calciarcus
Sister taxa: Balaniger HOL, Calciarcus, Quaternariella HOL

Daughter taxa (time control age-window is: 0-800Ma)		Granddaughter taxa
	Calciarcus alaskensis Scales ca. 0.5 µm across, with 3 or 4 calcified struts forming a wigwam-like structure	Calciarcus alaskensis morphotype 1 Calciarcus alaskensis morphotype 2 Calciarcus alaskensis morphotype 3
	Calciarcus sp.

Taxonomy:

Citation: Calciarcus Manton, Sutherland & Oates 1977

taxonomic rank: Genus

Type species: Calciarcus alaskensis Manton, Sutherland & Oates 1977

Taxonomic discussion: See Thomsen & Ostergaard (2014) for a recent review

Distinguishing features:
Parent taxon (tubeless-minute): Lightly calcified holococcoliths, <1µm across; typically organic scales with weak calcification
This taxon: Monomorphic. Rhombohedral crystallites forming 3 or 4 radial converging struts attached to a scale with calcareous rim

Farinacci & Howe catalog pages: Calciarcus + *

Search data:

LITHS: holococcolith, circular, CA: diagonal cross,
CSPH: equant, monomorphic,

Lith size: 0.5->0.7µm; Coccosphere size: 5->7µm;
Data source notes: lith and csph size from illustrated specimens

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 ranges of the species in this database
First occurrence (base): within No known fossil record modern (0.00-0.00Ma, base in "Holocene" stage). Data source: Total of ranges 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. See also: customisable plot Parent: tubeless-minute

References:

Manton, I., Sutherland, J. & Oates, K. (1977). Arctic coccolithophorids: Wigwamma arctica gen. et sp. nov. from Greenland and Arctic Canada; W. annulifera sp. nov. from South Africa and S. Alaska and Calciarcus alaskensis gen. et sp. nov. from S. Alaska. Proceedings of the Royal Society of London. 197(1127): 145-168. gs

Thomsen, H. A. & Ostergaard, J. B. (2014). Coccolithophorids in polar waters: Calciarcus spp. revisited. Acta Protozoologica. 53(145-157): -. gs

Calciarcus compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 15-10-2024

Taxon Search:

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