Nannotax3 - ntax_cenozoic - Mercedesia


Classification: ntax_cenozoic -> Nannolith families inc sed -> Nannolith genera inc sed -> Mercedesia
Sister taxa: Ericiolus, Florisphaera, Pileolosphaera, Mercedesia ⟩⟨ Goniolithus, Nannoturba, Minylitha, Unidentified nannoliths

Daughter taxa (time control age-window is: 0-800Ma)
Mercedesia aspiphora
Nannoliths sub-triangular, with slightly concave sides; distal side with sutural ribs and central nodule, ca 0.5µm across
Mercedesia multistellata
Nannoliths Y-shaped, rays tapering, ca 0.5µm across
Mercedesia pusilla
Nannoliths like M multistellata but smaller (<0.3µm) and with central pore


Citation: Mercedesia Thomsen & Ostergaard 2015
Rank: Genus
Type species: Mercedesia aspiphora Thomsen & Ostergaard 2015

Distinguishing features:
Parent taxon (Nannolith genera inc sed): Three apparently unique genera, not-included in described families
This taxon: Nannoliths triradiate. Cells monomorphic.

Farinacci & Howe catalog pages: Mercedesia *



Ecology & Biogeography

Biology & life-cycles

Phylogenetic relations

Search data:
LITHS: nannolith-radiate, star-shaped,
CSPH: equant, elongated, monomorphic,
Lith size: 0.2->0.9µm; Segments: 3->3; Coccosphere size: 3->5µm;
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 "Holocene" stage). Data source: Total of range of species in this database

Plot of occurrence data:


Thomsen, H. A. & Ostergaard, J. B. (2015b). Coccolithophorids in Polar Waters: Mercedesia gen. nov., Ericiolus, Quaternariella and Porsildia gen. nov. Acta Protozoologica. 54: 155-169. gs V O


Mercedesia compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 27-11-2022

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

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