Sethodiscus macrococcus

Classification: rads_cenozoic -> Coccodiscidae -> Sethodiscus -> Sethodiscus macrococcus
Sister taxa: S. macrococcus, S. sp.


Citation: Sethodiscus macrococcus Haeckel 1887
Rank: species
Basionym: Sethodiscus macrococcus

Catalog entries: Sethodiscus macrococcus

Original description: Disk with smooth surface, two and a half times as broad as the medullary shell. Pores irregular, polygonal; eleven to twelve on the radius of the disk. (The pores of the medullary shell, fig. 3, are regular, circular, with elevated hexagonal frames between them. The figured specimen is a young one, both halves of the biconvex disk being not yet united in the equatorial plane.)
Remarks on original description: Haeckel listed Sethodiscus macrococcus under the subgeneric name Sethodiscinus, but did not include the subgeneric name in the species name.

This species is assigned to Sethodiscus (the senior homonym) Haeckel, 1881a, p.457 (non p.430).[comment from RadWorld database]


Biogeography and Palaeobiology

Biostratigraphic distribution

Geological Range:
Last occurrence (top): Extant Data source: Lazarus et al. 2015 - "R age group"
First occurrence (base): within Quaternary Period (0.00-2.59Ma, base in Gelasian stage). Data source: Lazarus et al. 2015 - "R age group"

Plot of occurrence data:



Sethodiscus macrococcus compiled by the radiolaria@mikrotax project team viewed: 14-4-2021

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