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.
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: 13-6-2021
Short stable page link: https://mikrotax.org/radiolaria/index.php?id=205445 Go to Archive.is to create a permanent copy of this page - citation notes