Pocillithus


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

Daughter taxa: (blue => in age window 0-800Ma)
Coccoliths with high, narrow walls; central-area with axial cross supporting tall spine

Taxonomy:

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

Distinguishing features: Coccoliths with tall, narrow, quadrate spines; high rim with smooth distal rim.

Farinacci & Howe catalog pages: Pocillithus *


Morphology remarks: 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:
TagsLITHS: murolith, elliptical, RIM: outer wall non-imbricate, rim-narrow, CA: cross, cross-axial, PROCESS: spine, tall,
CSPH: not known, DETAILS: ca_disjunct,
MetricsLith size: 1->1.2ยตm;
Sources:
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 Rupelian Stage (100% up, 28.1Ma, in Rupelian stage). Data source: Total of range of species in this database
First occurrence (base): at base of Thanetian Stage (0% up, 59.2Ma, in Thanetian stage). Data source: Total of range 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: 11-38. gs

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: 17-9-2019

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Short stable page link: http://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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