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

Taxonomy

Citation: Larcopyle polyacantha subsp. amplissima Lazarus et al. (2005)
taxonomic rank: sub-species
Basionym: Larcopyle polyacantha amplissima
Synonyms:
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.

Description

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:

References:

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


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

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Short stable page link: https://mikrotax.org/radiolaria/index.php?id=204409 Go to Archive.is to create a permanent copy of this page - citation notes



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