radiolaria - rads_cenozoic - Prunopyle occidentalis

Prunopyle occidentalis


Classification: rads_cenozoic -> Actinommidae -> Prunopyle -> Prunopyle occidentalis
Sister taxa: P. adelstoma, P. hayesi, P. monikae, P. occidentalis, P. tetrapila, P. titan, P. trypopyrena, P. sp.

Taxonomy

Citation: Prunopyle occidentalis Clark & Campbell 1942
Rank: species
Basionym: Prunopyle occidentalis Clark and Campbell 1942

Catalog entries: Prunopyle occidentalis

Original description: Shell broadly egg-shaped, nearly one and half times longer than broad, greatest width slightly above the middle composed of a single, rather dense shell with a posterior pylome surrounded by rings of short spikelike spines, the diameter of the ring being about equal to a minor radius; surface generally smooth, but in one individual with many very short, fine needle-shaped spines; pores about eight to ten in a line across a minor radius, the pores funnel-shaped, often twisted irregularly; wall thick.

Length, 330µm; greatest width, 250µm. A dwarf individual was 170 by 120µm. The pores have a diameter of 8.8µm, the posterior spines of the pylome a length of 13.2µm, and the wall a thickness of 15.4µm. Distinguishing characters (rw): Prunopyle occidentalis n. sp. differs from P. longisetosa Dreyer (1890), which it resembles in shape, in the lack of surface spines or thorns.

Description


Morphology:


Size:

Biogeography and Palaeobiology


Similar species


Geographic distribution

Paleobiology

Phylogenetic relations

Biostratigraphic distribution

Geological Range:
Last occurrence (top): within (-Ma, top in "Holocene" stage).
First occurrence (base): within (-Ma, base in "Holocene" stage).

Plot of occurrence data:

References:

Clark, B. L. & Campbell, A. S. (1942a). Eocene radiolarian faunas from the Mt. Diablo area, California. Geological Society of America, Special Papers. 39: 1-112. gs


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Prunopyle occidentalis compiled by the radiolaria@mikrotax project team viewed: 3-12-2022

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