Sphaerocalyptra


Classification: Coccolithophores -> Holococcoliths -> tubeless -> Sphaerocalyptra
Sister taxa: Anthosphaera, Sphaerocalyptra, flat (coccolithaceae HOLs), flat dimorphic, fried egg monomorphic, tubeless-minute

Daughter taxa: (blue => in age window 0-800Ma)
Sphaerocalyptra quadridentata
BCs conical with basal flange
Sphaerocalyptra adenensis
BCs flatter than S. quadridentata
Sphaerocalyptra dermitzakii
BCs taller, more conical than S. quadridentata
Sphaerocalyptra youngii
Elliptical base supports conical protrusion with a few large perforations
Sphaerocalyptra sp. 1
BCs low but sharp cones; ca. 1.5 µm long. CFCs high cones with distinct base 2 crystallites high
Sphaerocalyptra sp. 2
BCs narrow-based steep cones with sharp tip; ca. 0.8 µm long, 0.8 µm high. CFCs high cones with distinct base 2 crystallites high.
Sphaerocalyptra sp. 3
BCs with basal ring 2 crystallites high; surmounted by open cone of 3-4 robust bars; ca. 1.1 µm long. CFCs similar but with spine rising from the cone.
Sphaerocalyptra sp. 4
BCs with basal ring 1 crystallite high; surmounted by open cone of 4-6 delicate bars, with apical spine; ca. 1.7 µm long. CFCs similar but with tall spine.
Sphaerocalyptra sp. 5
BCs with curved cover with 2-3 openings; ca. 1.6 µm long. CFCs with conical spine supported by a few bars.
Sphaerocalyptra sp. 6
BCs delicate, ?domal (good specimens not seen); ca. 0.8 µm long. CFCs with long straight spine.
Sphaerocalyptra sp. Y
Elliptical base supports two arms
Sphaerocalyptra sp.
Specimens which cannot be assigned to established species

Taxonomy:

Citation: Sphaerocalyptra Deflandre, 1952
Rank: Genus
Type species: Calyptrosphaera quatridentata Schiller, 1913

Farinacci & Howe catalog pages: Sphaerocalyptra *

Search data:
TagsLITHS: holococcolith, elliptical, cylindrical, hollow,
CSPH: equant, elongated, CFC,
MetricsLith size: 0.5->2.5µm;
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 stage). Data source: Total of range of species in this database

Plot of occurrence data:

References:

Deflandre, G. (1952). Classe des Coccolithophoridés. (Coccolithophoridae. Lohmann, 1902). In, Grassé, P. P. (ed.) Traité de Zoologie. Masson, Paris 439-470. gs


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Sphaerocalyptra compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 24-10-2020

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Short stable page link: http://mikrotax.org/Nannotax3/index.php?id=1263 Go to Archive.is to create a permanent copy of this page - citation notes



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