Formonsella


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

Daughter taxa: (blue => in age window 0-800Ma)

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

Distinguishing features: Coccolith distal rim weakly serrated - elements imbricate rods;
Coccosphere dimorphic - BCs with irregular tiles & calicate coccoliths with conical calices

Farinacci & Howe catalog pages:

Search data:
TagsLITHS: murolith, elliptical, RIM: rim-low, rim-narrow, PROCESS: calyx, spine,
CSPH: spherical, BC+process, BC-dimorphic, polymorphic, DETAILS: ca_disjunct,
MetricsLith size: 0.6->1.1µm; Coccosphere size: 8->10µm;
Sources:
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 range of species in this database
First occurrence (base): at top of No known fossil record modern (100% up, 0Ma, in stage). Data source: Total of range of species in this database

Plot of occurrence data:

References:

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


nannotaxlogo400px

Formonsella compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 16-12-2019

Taxon Search:
Advanced Search

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



Comments (0)

No comments yet. Be the first!

Add Comment

* Required information
1000
Captcha Image
Powered by Commentics