Poricalyptra isselii


Classification: ntax_cenozoic -> Holococcoliths -> flat-topped -> Poricalyptra -> Poricalyptra isselii
Sister taxa: P. aurisinae, P. isselii, P. magnaghii, S. gaarderae HOL, P. sp.

Taxonomy:

Citation: Poricalyptra isselii (Borsetti & Cati 1976) Kleijne, 1991
Rank: Species
Basionym: Helladosphaera isselii Borsetti & Cati 1976

Distinguishing features: 4-7 irregular pores in distal surface, tube openings irregular, well separated.
1 concentric ring of crystallites around margin

Farinacci & Howe catalog pages: H. isselii *

Search data:
TagsLITHS: holococcolith, elliptical, hollow, CA: pores,
CSPH: elongated, CFC, CROSS-POLARS: V-prominent, R-prominent,
MetricsLith size: 1.7->2.4µm; Coccosphere size: 9.5->11.5µm; Liths per sphere: 50->100
Data source notes: morphom data from Yang & Wei (2003), Cros & Fortuño (2002)
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:

References:

Borsetti, A. M. & Cati, F. (1976). Il Nannoplancton calcareo vivente nel Tirreno Centro-meridionale. Parte II. Giornale di Geologia. 40(1): 209-240. gs V O

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


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Poricalyptra isselii compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 12-4-2021

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Short stable page link: https://mikrotax.org/Nannotax3/index.php?id=1109 Go to Archive.is to create a permanent copy of this page - citation notes



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