Nannotax3 - ntax_cenozoic

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Formonsella

Classification: ntax_cenozoic -> Coccolith families inc sed -> Papposphaeraceae -> Formonsella
Sister taxa: Papposphaera, Pappomonas, Balaniger, Formonsella, Quaternariella ⟩⟨ Ventimolina, Wigwamma, Pseudowigwamma ⟩⟨ Kataspinifera, Picarola, Vexillarius, Pocillithus

Daughter taxa (time control age-window is: 0-800Ma)
				Formonsella pyramidosa BCs central area with continuous cover of rather irregular plates; CFC process ca. 2.3 µm high with broad conical calyx of four plates with finely serrated margin, base with cross-bars.

Taxonomy:

Citation: Formonsella Thomsen, Cros, Malinverno, Ostergaard, Cortés, Geisen & Young

Taxonomic rank: genus

Type species: Formonsella pyramidosa Thomsen, Cros, Malinverno, Ostergaard, Cortés, Geisen & Young 2016

Distinguishing features:
Parent taxon (Papposphaeraceae): Narrow-rimmed muroliths, mostly with prominent central structures.
This taxon: Coccolith distal rim weakly serrated - elements imbricate rods;
Coccosphere dimorphic - BCs with irregular tiles & calicate coccoliths with conical calices

Farinacci & Howe catalog pages: Formonsella

Search data:

LITHS: murolith, elliptical, CA: ca_disjunct, process,
CSPH: equant, BC-dimorphic,

Lith size: 0.6->1.1µm; Coccosphere size: 8->10µm;

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 ranges of the species in this database
First occurrence (base): within No known fossil record modern (0.00-0.00Ma, base in "Holocene" stage). Data source: Total of ranges 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. See also: customisable plot Parent: Papposphaeraceae

References:

Thomsen, H. A. et al. (2016). Formonsella pyramidosa (Haptophyta, Papposphaeraceae): a new weakly calcified coccolithophore genus from warm-water regions. Journal of Micropalaeontology. 35: 125-132. gs

Formonsella compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 23-1-2025

Taxon Search:

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Short stable page link: https://mikrotax.org/Nannotax3/index.php?id=593 Go to Archive.is to create a permanent copy of this page - citation notes

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