Nannotax3 - ntax_cenozoic - Formonsella Nannotax3 - ntax_cenozoic - Formonsella

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 [no catalog entry yet]

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:

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


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Formonsella compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 14-4-2024

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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