Nannotax3 - ntax_mesozoic - Pocillithus crucifer Nannotax3 - ntax_mesozoic - Pocillithus crucifer

Pocillithus crucifer


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

Distinguishing features:
Parent taxon (Pocillithus): Minute muroliths with prominent spine, rim non-imbricate typically with serrated distal margin.
This taxon: rim low with smooth distal margin; central area spanned by cross-bars


Taxonomy:

Citation: Pocillithus crucifer Lees, Bown & Young 2017
taxonomic rank: Species

Farinacci & Howe catalog pages: P. crucifer *

Distinguishing features:
Parent taxon (Pocillithus): Minute muroliths with prominent spine, rim non-imbricate typically with serrated distal margin.
This taxon: rim low with smooth distal margin; central area spanned by cross-bars


Morphology:

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.

Search data:
LITHS: murolith, circular, elliptical, cylindrical, CA: process, diagonal cross,
Lith size: 0.5->1.5µm;
Data source notes: holotype +/-0.5µm
The morphological data given here can be used on the advanced search page. See also these notes

Geological Range:
Last occurrence (top): within Turonian Stage (89.39-93.90Ma, top in Turonian stage). Data source: Bown et al. 2017
First occurrence (base): within Turonian Stage (89.39-93.90Ma, base in Turonian stage). Data source: Bown et al. 2017

Plot of occurrence data:

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: 20-4-2024

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Short stable page link: https://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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