Leesella


Classification: ntax_cenozoic -> Coccolith families inc sed -> Coccolith genera inc sed -> Leesella
Sister taxa: Aliculosphaera, Biantholithus, Camuralithus, Centumgemina, Ellipsolithus, Gladiolithus, Ilselithina, Leesella, Pedinocyclus, Petasus

Daughter taxa (time control age-window is: 0-800Ma)
Leesella procera
Variably tall cylindrical nannofossils with a narrow axial canal, that flare from a small basal disc to form a trumpet shape.  Formed from a single cycle of crystal units with co-planar radial c-axes.
Leesella sp.
Specimens which cannot be assigned to any established species

Taxonomy:

Citation: Leesella Bown & Dunkley Jones, 2006
Rank: Genus
Type species: Leesella procera Bown & Dunkley Jones, 2006

Distinguishing features: Relatively tall nannofossils that flare from a small basal disc to form a trumpet shape. They have a narrow, axial canal and are usually seen in side view.

Farinacci & Howe catalog pages: Leesella *

Search data:
TagsLITHS: placolith, circular, cylindrical, hollow, CA: vacant, CROSS-POLARS: rim-unicyclic, R-prominent,
MetricsLith size: 2->7µm;
The morphological data given here can be used on the advanced search page. See also these notes

Geological Range:
Last occurrence (top): in lower part of Bartonian Stage (22% up, 40.4Ma, in Bartonian stage). Data source: Total of range of species in this database
First occurrence (base): in upper part of Lutetian Stage (74% up, 42.9Ma, in Lutetian stage). Data source: Total of range of species in this database

Plot of occurrence data:

References:

Bown, P. R. & Dunkley Jones, T. (2006). New Paleogene calcareous nannofossil taxa from coastal Tanzania: Tanzania Drilling Project Sites 11 to 14. Journal of Nannoplankton Research. 28(1): 17-34. gs V O


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Leesella compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 1-3-2021

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Short stable page link: https://mikrotax.org/Nannotax3/index.php?id=809 Go to Archive.is to create a permanent copy of this page - citation notes



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