Nannotax3 - ntax_cenozoic - Pontosphaeraceae

Pontosphaeraceae

Classification: ntax_cenozoic -> Zygodiscales -> Pontosphaeraceae
Sister taxa: Helicosphaeraceae, Pontosphaeraceae, Zygodiscaceae

Daughter taxa: (blue => in age window 0-800Ma)		Granddaughter taxa
	Pontosphaera Coccoliths are muroliths, central area with variable number of perforations. V-units form narrow imbricate outer wall, R-units form inner wall and central-area.	P. multipora P. discopora P. distincta P. enormis P. desuetoidea P. geminipora P. longiforaminis P. megapachydisca P. veta P. syracusana P. alta P. panarium P. versa P. wallacei P. latoculata P. sp.A P. formosa P. wechesensis P. fimbriata P. brinkhuisii P. hollisii P. romansii P. japonica P. plana P. rimosa P. pectinata P. wilsonii P. punctosa P. clinosulcata P. perforomarginata P. pulcheroides P. pulchra P. pygmaea P. ocellata P. duocava P. exilis P. pax P. obliquipons T. omarians P. sp.
	Scyphosphaera Coccospheres with Pontosphaera-like body coccoliths and equatorial coccoliths with rims elevated into vase-like structures (lopadoliths).	S. apsteinii S. porosa S. brevis S. globulata S. hamptonii S. hemirana S. lagena S. campanula S. intermedia S. pulcherrima S. tubifera S. ventriosa S. columella S. expansa S. interstincta S. olla S. tercisensis S. tubicena S. sp.

Taxonomy:

Citation: Pontosphaeraceae Lemmermann, 1908

Rank: Family

Distinguishing features: Monomorphic or dimorphic; liths muroliths with perforate central area

Farinacci & Howe catalog pages: Pontosphaeraceae [no catalog entry yet]

Morphology: Coccospheres sub-spherical, without flagellar opening (although flagellae have occasionally been observed). Monomorphic (Pontosphaera) or dimorphic with strongly-modified equatorial coccoliths (Scyphosphaera). Coccoliths are muroliths, central area with variable number of perforations. V-units form narrow outer rim-cycle with anti-clockwise imbrication. R-units form inner rim, with weak clockwise imbrication, baseplate and blanket.

Biology & life-cycles: Two extant species are known to have holococcolith -bearing life cycle phases, Frada et al. (2009)

Search data:

Tags	LITHS:
Metrics	Lith size: 5->25µm;

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 base of Selandian Stage (4% up, 61.5Ma, in Selandian 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: Zygodiscales

References:

Frada, M., Percopo, I., Young, J. R., Zingone, A., de Vargas, C. & Probert, I. (2009). First observations of heterococcolithophore-holococcolithophore life cycle combinations in the family Pontosphaeraceae (Calcihaptophycideae, Haptophyta). Marine Micropaleontology. 71(1): 20-27. gs

Lemmermann, E. (1908). Flagellatae, Chlorophyceae, Coccosphaerales und Silicoflagellatae. In, Brandt, K. & Apstein, C. (eds) Nordisches Plankton. Botanischer Teil. Lipsius & Tischer, Kiel & Leipzig 1-40. gs

Pontosphaeraceae compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 22-1-2021

Taxon Search:

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Short stable page link: http://mikrotax.org/Nannotax3/index.php?id=1105 Go to Archive.is to create a permanent copy of this page - citation notes

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