Nannolith genera inc sed


Ancestry: Coccolithophores -> Nannolith families inc sed -> Nannolith genera inc sed
Sister taxa: Ceratolithaceae, Lapideacassaceae, Lithostromationaceae, Nannolith genera inc sed, Rhomboasteraceae,

Short diagnosis: Three apparently unique genera, not-included in described families


Daughter taxa (blue => in age window 0-300Ma) Granddaughter taxa
extant genera
Nannoliths are tetrads of spines - “caltrops”. Cells monomorphic, saddle-shaped, with long flagella and haptonema. 

Coccoliths formed of single angular calcite unti, coccospheres flower-like

Coccosphere formed of a few cap-shaped nannoliths

Nannoliths triradiate. Cells monomorphic.

Small to medium pentagonal liths, with narrow rim and granular central area plate. Dark image in LM.

Nannoliths kite-shaped plates with raised margin on both sides

Taxonomy:

Citation: Nannolith genera incertae sedis
Rank: informal grouping

Farinacci & Howe catalog pages:

Short diagnosis: Three apparently unique genera, not-included in described families

Geological Range:
Last occurrence (top): Extant Data source: Total of range of species in this database
First occurrence (base): within Coniacian Stage (86.26-89.77Ma, base in Coniacian stage). Data source: Total of range of species in this database

Plot of occurrence data:


nannotaxlogo400px

Nannolith genera inc sed compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 22-7-2017

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