Catalog entries: Excentrosphaerella sphaeroconcha
Original description: Both cortical shells spherical or subspherical, with circular or subcircular pores irregularly arranged. They are connected to one another and to the medullary shell by numerous thin radial beams. Outer surface thorny.
Diameter of microsphere 13µm, of outer medullary shell 55-65µm, of inner cortical shell 117-123µm, of outer cortical shell 217-240µm.
Last occurrence (top): within (-Ma, top in "Holocene" stage). Data source:
First occurrence (base): within (-Ma, base in "Holocene" stage). Data source:
Plot of occurrence data:
Excentrosphaerella sphaeroconcha compiled by the radiolaria@mikrotax project team viewed: 25-9-2021
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