radiolaria - rads_cenozoic - Larcopyle polyacantha amplissima radiolaria - rads_cenozoic - Larcopyle polyacantha amplissima

Larcopyle polyacantha amplissima

Classification: rads_cenozoic -> Pyloniidae -> Larcopyle -> Larcopyle polyacantha -> Larcopyle polyacantha amplissima
Sister taxa: L. polyacantha amplissima, L. polyacantha polyacantha, L. polyacantha titan


Citation: Larcopyle polyacantha subsp. amplissima Lazarus et al. (2005)
taxonomic rank: sub-species
Basionym: Larcopyle polyacantha amplissima
2005 Larcopyle polyacantha amplissima - Lazarus et al p.108; pl. 4, figs. 1-10

Catalog entries: Larcopyle polyacantha amplissima

Original description:

The sub-cylindrical to elliptical cortical shell is about 170 μm long and bears spines on each pole. The inner whorls of the shell are connected only loosely to the cortical shell and frequently are broken free of it, so the central disc can change its position and can be found near a pole. The outer wall is pierced by small- to medium- sized, irregularly arranged pores, which often lack frames. The inner whorls may be single or double, in some specimens the outer (cortical) whorls include incomplete polar caps. A well-developed pylome is present in most specimens.


Biogeography and Palaeobiology

Biostratigraphic distribution

Geological Range:
Last occurrence (top): within Middle Miocene Sub-Epoch (11.62-15.97Ma, top in Serravallian stage). Data source: Lazarus et al. 2005
First occurrence (base): within Early Miocene Sub-Epoch (15.97-23.03Ma, base in Aquitanian stage). Data source: Lazarus et al. 2005

Plot of occurrence data:


Lazarus, D., Faust, K. & Popova-Goll, I. (2005). New species of prunoid radiolarians from the Antarctic Neogene. Journal of Micropalaeontology. 24(2): 97-121. gs


Larcopyle polyacantha amplissima compiled by the radiolaria@mikrotax project team viewed: 2-3-2024

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