Catalog entries: Heliodiscus echiniscus
Original description: Disk with spiny surface, three times as broad as the medullary shell. Pores irregular, roundish ,or polygonal; eight to ten on the radius. Marginal spines thirty to fifty, pyramidal, angular, of very variable size, number, and disposition, gradually passing into the surface-spines; the largest nearly as long as the diameter of the medullary shell.
Remarks on original description: Haeckel listed Heliodiscus echiniscus under the subgeneric name Heliodiscilla, but did not include the subgeneric name in the species name.[comment from RadWorld database]
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:
Heliodiscus echiniscus compiled by the radiolaria@mikrotax project team viewed: 25-9-2021
Short stable page link: https://mikrotax.org/radiolaria/index.php?id=204252 Go to Archive.is to create a permanent copy of this page - citation notes