radiolaria - rads_cenozoic - Spirema melonia

Spirema melonia

Classification: rads_cenozoic -> Pyloniidae -> Spirema -> Spirema melonia
Sister taxa: S. circularis, S. melonia, S. sp.


Citation: Spirema melonia Haeckel 1887
Rank: species
Basionym: Spirema melonia

Catalog entries: Spirema melonia

Original description: Cortical shell nearly spherical, with smooth surface; proportion of its three dimensive axes = 1.4: 1.5: 1.6. In the median plane are visible three perfect turnings of the simple spiral, all of the same breadth as the simple spherical medullary shell; the breadth of each convolution somewhat greater at the poles of the principal than at the poles of the sagittal axis.

Length of the shell 160µm, breadth 150µm, height 140µm; medullary shell 18µm.
Remarks on original description: Haeckel listed Spirema melonia under the subgeneric name Spiremarium, but did not include the subgeneric name in the species name.


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:



Spirema melonia compiled by the radiolaria@mikrotax project team viewed: 21-9-2021

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