The shell is elongate egg-shaped and about 120 μm long. The interior of the shell is usually empty, although a delicate set of widely spaced elongated medullary shells can be seen in some specimens. A well-developed pylome with teeth is visible at one pole, which often forms a tube-like structure. The medium-sized pores are circular and rather regularly arranged. They are surrounded by weak frames. The surface varies from smooth to somewhat thorny due to variably developed pore frames. The outer shell wall is rather thin.
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:
Range-bar - range as quoted above, pink interval top occurs in, green interval base occurs in.
Triangles indicate an event for which a precise placement has been suggested
(NB There is no histogram as there are no occurrence records for the taxon in the Neptune database) Parent: Larcopyle
References:
Abelmann, A. (1990). Oligocene to Middle Miocene radiolarian stratigraphy of southern high latitudes from Leg 113, Sites 689 and 690, Maud Rise. Proceedings of the Ocean Drilling Program, Scientific Results. 113: 675-708. gs
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 eccentricum compiled by the radiolaria@mikrotax project teamviewed: 29-11-2023
L eccentricum Lazarus et al 2005 pl 6 fig 04.jpg
L eccentricum Lazarus et al 2005 pl 6 fig 05.jpg
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L eccentricum Lazarus et al 2005 pl 6 fig 07.jpg
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L eccentricum Lazarus et al 2005 pl 6 fig 09.jpg
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L eccentricum Lazarus et al 2005 pl 6 fig 11.jpg
L eccentricum Lazarus et al 2005 pl 6 fig 12.jpg
L eccentricum Lazarus et al 2005 pl 6 fig 13.jpg
L eccentricum Lazarus et al 2005 pl 6 fig 14.jpg
L eccentricum Lazarus et al 2005 pl 6 fig 15.jpg
rad_org Larcopyle eccentricum img2571.jpg
rad_org Larcopyle eccentricum img2572.jpg
rad_org Larcopyle eccentricum img2573.jpg
rad_org Larcopyle eccentricum img2574.jpg
rad_org Larcopyle eccentricum img2575.jpg
L eccentricum Lazarus et al 2005 pl 6 fig 01.jpg
L eccentricum Lazarus et al 2005 pl 6 fig 02.jpg
L eccentricum Lazarus et al 2005 pl 6 fig 03.jpg
rad_org Larcopyle eccentricum img2569.jpg
rad_org Larcopyle eccentricum img2570.jpg
