Nannotax3 - ntax_cenozoic - Sphaerocalyptra sp. Y

Sphaerocalyptra sp. Y

Classification: ntax_cenozoic -> Holococcoliths -> tubeless -> Sphaerocalyptra -> Sphaerocalyptra sp. Y
Sister taxa: S. quadridentata, S. adenensis, S. dermitzakii, S. youngii, S. sp. 1, S. sp. 2, S. sp. 3, S. sp. 4, S. sp. 5, S. sp. 6, S. sp. Y, S. sp.

Young_etal_2003_181-77.JPG
Young_etal_2003_181-78.JPG
Cros & Fortuno 2002 f069C.jpg
Cros & Fortuno 2002 f069D.jpg

Taxonomy:

Citation: Sphaerocalyptra sp. Y undescribed

Rank: Species

Synonyms: Holococcolithophore sp. cf. Sphaerocalyptra

Distinguishing features: Elliptical base supports two arms

Farinacci & Howe catalog pages:

Morphology: Monomorphic. Coccoliths with small elliptical bases one crystallite high supporting two processes which bend together to form spatulate spine. Base length ca. 0.5 µm), spine height 1-1.5 µm. A very similar form is illustrated by Cros & Fortun_o (2002) as “Papposphaera holococcolithophore” (“Turrisphaera”) phase sp. type B. Papposphaera affinities do seem possible but are tentative, hence the less definite assignment given here.

Search data:

Tags	LITHS: holococcolith, elliptical, cylindrical, hollow, CA: pores, vacant, process, CSPH: equant, elongated, CFC,
Metrics	Lith size: 1->1.5µm; Data source notes: lith size (height) from illustrated specimens; 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: present in the plankton (Young et al. 2003)
First occurrence (base): within No known fossil record modern (0.00-0.00Ma, base in "Holocene" stage). Data source: [JRY rough estimate]

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
(NB There is no histogram as there are no occurrence records for the taxon in the Neptune database) Parent: Sphaerocalyptra

References:

Cros, L. & Fortuño, J. -M. (2002). Atlas of northwestern Mediterranean coccolithophores. Scientia Marina. 66: 1-186. gs V O

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, Special Issue. 1: 1-132. gs V O

Sphaerocalyptra sp. Y compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 28-2-2021

Taxon Search:

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Short stable page link: https://mikrotax.org/Nannotax3/index.php?id=1274 Go to Archive.is to create a permanent copy of this page - citation notes

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