Nannotax3 - ntax_mesozoic

Calyculaceae

Classification: ntax_mesozoic -> Podorhabdales -> Calyculaceae
Sister taxa: Axopodorhabdaceae, Biscutaceae, Calyculaceae, Cretarhabdaceae, Mazaganellaceae, Prediscosphaeraceae, Tubodiscaceae

Distinguishing features: Elevated placoliths, tube tall and proximal shield reduced; central-area with variable proximal cover.
The distal shield is formed from V-units and the proximal shield from R-units. Commonly observed in side view.

Daughter taxa: (blue => in age window 0-800Ma)		Granddaughter taxa
	Calyculus High, broad, flaring distal-shield composed of radial, non-imbricating elements, and a proximal-shield which is often reduced to a simple, narrow cycle of elements; central-area structures are highly variable, including numerous bars, concentric structures, nets and grills.	C. cribrum C. depressus C. noeliae C. hommerili C. serrai C. absolutus C. derivatus C. magnus C. sp.
	Carinolithus Trumpet-shaped coccoliths with small, disc-like proximal shield and high, flaring distal shield.	C. magharensis C. poulnabronei C. superbus C. sp.

Taxonomy:

Citation: Calyculaceae Noël, 1973

Rank: Family

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

Search data:

Tags	LITHS: placolith,
Metrics	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): in mid part of Bathonian Stage (50% up, 167.2Ma, in Bathonian stage). Data source: Total of range of species in this database
First occurrence (base): in lower part of Pliensbachian Stage (40% up, 187.6Ma, in Pliensbachian 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: Podorhabdales

References:

Bown, P. R. & Cooper, M. K. E. (1998). Jurassic. In, Bown, P. R. (ed.) Calcareous Nannofossil Biostratigraphy. British Micropalaeontological Society Publication Series. 34-85. gs

Noël, D. (1973). Nannofossiles calcaires de sédiments jurassiques finement laminés. Bulletin du Muséum National d'Histoire Naturelle. 75: 95-156. gs

Calyculaceae compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 18-1-2021

Taxon Search:

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Short stable page link: http://mikrotax.org/Nannotax3/index.php?id=10182 Go to Archive.is to create a permanent copy of this page - citation notes

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