Nannotax3 - ntax_cenozoic - Picarola margalefii Nannotax3 - ntax_cenozoic - Picarola margalefii

Picarola margalefii

Classification: ntax_cenozoic -> Coccolith families inc sed -> Papposphaeraceae -> Picarola -> Picarola margalefii
Sister taxa: P. margalefii, P. sp.


Citation: Picarola margalefii Cros & Estrada, 2004
taxonomic rank: Species
Taxonomic discussion: The placement of Picarola within the Papposphaeraceae is strongly supported by the association of it with holococcoliths very similar to those of Papposphaera.

Distinguishing features:
Parent taxon (Picarola): Coccospheres varimorphic. All liths with curved quadrate process, but CFCs with larger processes.
This taxon: See generic diagnosis (genus is monospecific)

Farinacci & Howe catalog pages: P. margalefii *


Coccosphere trimorphic, all coccoliths are elliptical muroliths, ca. 1 µm long, with narrow flat topped rim, axial cross and prominent process.
CFCs numerous; large gently-curved, rectangular-section, process 2-3.5 µm long.
BCs numerous; smaller banana-shaped process, 1-2 µm long.
AACs one or two only; rim flaring; moderate sized, nearly straight process, ca. 2 µm long.

Biology & life-cycles

One combination coccopshere with holococcoliths resembling those of Papposphaera polybotrys HOL was observed by Keuter et al. 2021

See also: Papposphaera sp. HOL - similar holococcoliths;

Search data:
LITHS: murolith, elliptical, CA: cross-axial, ca_disjunct, process,
CSPH: equant, elongated, CFC,
Lith size: 0.7->0.9µm; Coccosphere size: 6->12µm; Liths per sphere: 54->80
Data source notes: csph & lith size (BC diameter) from Cros & Fortuño 2002 & slightly extended
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:


Cros, L. & Estrada, M. (2004). Picarola margalefii, gen. et sp. nov., a new planktonic coccolithophore from NW Mediterranean waters. Scientia Marina. 68(Suppl 1): 243-248. gs

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

Keuter, S., Young, J. R., Koplovitz, G., Zingone, A. & Frada, M. J. (2021). Novel heterococcolithophores, holococcolithophores and life cycle combinations from the families Syracosphaeraceae and Papposphaeraceae and the genus Florisphaera. Journal of Micropalaeontology. 40: 75-99. gs 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. S1: 1-132. gs


Picarola margalefii compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 1-3-2024

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Short stable page link: Go to to create a permanent copy of this page - citation notes

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