Pocillithus crucifer


Classification: Mesozoic -> Heterococcoliths inc sedis -> Papposphaeraceae -> Pocillithus -> Pocillithus crucifer
Sister taxa: P. crucifer, P. macleodii, P. sp.,

Distinguishing features: rim low with smooth distal margin; central area spanned by cross-bars


Taxonomy:

Citation: Pocillithus crucifer Lees, Bown & Young 2017
Rank: Species

Farinacci & Howe catalog pages: Pocillithus crucifer *

Distinguishing features: rim low with smooth distal margin; central area spanned by cross-bars


Morphology remarks: Miniscule to very small Pocillithus protolith muroliths with high, narrow, slightly-flaring rims, and central-areas spanned by a proximal plate(?) supporting a right-angled cross that bears a tall, narrow, lathy, hollow spine.
Differentiation. Pocillithus spinulifer has a central cross that forms a square spine-base, and the spine is square in cross-section; P. macleodii has a proximal plate that supports the spine, and no cross.

Size: Diameter = 1.0 μm.

Geological Range:
Last occurrence (top): within Turonian Stage (89.77-93.90Ma, top in Turonian stage). Data source: Bown et al. 2017
First occurrence (base): within Turonian Stage (89.77-93.90Ma, base in Turonian stage). Data source: Bown et al. 2017

Plot of occurrence data:

  • (NB There is no histogram as there are no occurrence records for the taxon in the Neptune database) Parent: Pocillithus

    References:

    Bown, P. R., Lees, J. A. & Young, J. R. (2017). On the Cretaceous origin of the Order Syracosphaerales and the genus Syracosphaera. Journal of Micropalaeontology. 36(2): 153-165. gs


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    Pocillithus crucifer compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 8-12-2019

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    Short stable page link: http://mikrotax.org/Nannotax3/index.php?id=10915 Go to Archive.is to create a permanent copy of this page - citation notes



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