Nannotax3 - ntax_cenozoic - Pocillithus Nannotax3 - ntax_cenozoic - Pocillithus

Pocillithus


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

Daughter taxa (time control age-window is: 0-800Ma)
Pocillithus spinulifer
Coccoliths with high, narrow walls; central-area with axial cross supporting tall spine

Taxonomy:

Citation: Pocillithus Dunkley Jones et al. 2009
taxonomic rank: Genus
Type species: Pocillithus spinulifer Dunkley Jones et al. 2009
Taxonomic discussion: Tentatively included in the Papposphaeraceae on grounds of being a narrow-rimmed murolith with central cross and quadrate spine

Distinguishing features:
Parent taxon (Papposphaeraceae): Narrow-rimmed muroliths, mostly with prominent central structures.
This taxon: Coccoliths with tall, narrow, quadrate spines; high rim with smooth distal rim. Only known from fossil record,

Farinacci & Howe catalog pages: Pocillithus *


Morphology:

Spines have narrow axial canal. Proximal cycle not seen to date, but these are very small coccoliths. No evidence of coccolith dimorphism seen (Dunkley Jones et al. 2009)

Search data:
LITHS: murolith, elliptical, CA: cross-axial, ca_disjunct, process,
Lith size: 1->1.2µm;
The morphological data given here can be used on the advanced search page. See also these notes

Geological Range:
Last occurrence (top): at top of Early Oligocene Sub-Epoch (100% up, 28.1Ma, in Rupelian stage). Data source: Total of ranges of the species in this database
First occurrence (base): within Late Paleocene Sub-Epoch (55.96-59.24Ma, base in Thanetian stage). Data source: Total of ranges of species in this database

Plot of occurrence data:

References:

Andruleit, H. & Young, J. R. (2010). Kataspinifera baumannii: a new genus and species of deep photic coccolithophores resembling the non-calcifying haptophyte Chrysochromulina. Journal of Micropalaeontology. 29: 135-147. gs

Bown, P. R. (2010). Calcareous nannofossils from the Paleocene/Eocene Thermal Maximum interval of southern Tanzania (TDP Site 14). Journal of Nannoplankton Research. 31(1): 11-38. gs O

Dunkley Jones, T., Bown, P. R. & Pearson, P. (2009). Exceptionally well preserved upper Eocene to lower Oligocene calcareous nannofossils (Prymnesiophycidae) from the Pande Formation (Kilwa Group), Tanzania. Journal of Systematic Palaeontology. 7(4): 359-411. gs


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Pocillithus compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 2-3-2024

Taxon Search:
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Short stable page link: https://mikrotax.org/Nannotax3/index.php?id=1057 Go to Archive.is to create a permanent copy of this page - citation notes
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