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.


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.




Biogeography and Palaeobiology

Similar species

Geographic distribution


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:


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


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

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