Heliodiscus asteriscus


Classification: rads_cenozoic -> Heliodiscidae -> Heliodiscus -> Heliodiscus asteriscus
Sister taxa: H. asteriscus, H. echiniscus, H. hexasteriscus, H. tunicatus, H. sp.

Taxonomy

Citation: Heliodiscus asteriscus Haeckel 1887
Rank: species
Basionym: Heliodiscus asteriscus
Taxonomic discussion: Haeckel 1887; Nigrini & Moore 1979 p S73 pl 9 figs 1-2

Catalog entries: Heliodiscus asteriscus

Original description: Disk with smooth surface, three times as broad as the medullary shell. Pores regular, circular; ten to twelve on the radius of the disk. Marginal spines fifteen to twenty, conical, often double contoured, of variable size and disposition, the largest as long as the radius of the disk, as broad as the base as one pore.

Diameter of the disk 150µm, of the medullary shell 50µm; length of the radial spines 40 to 70µm, basal breadth 10µm.
Remarks on original description: Haeckel listed Heliodiscus asteriscus under the subgeneric name Heliodiscetta, but did not include the subgeneric name the species name.

Description

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:

References:

Haeckel, E (1887). Report on the Radiolaria collected by H.M.S. Challenger during the years 1873-1876. Report on the Scientific Results of the Voyage of H.M.S. Challenger during the year 1873-1876, Zoology. 18: 1-1803. gs

Nigrini, C. A. & Moore, T. C. Jr. (1979). A guide to modern Radiolaria. Cushman Foundation for Foraminiferal Research, Special Publication. 16: 1-260. gs


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Heliodiscus asteriscus compiled by the radiolaria@mikrotax project team viewed: 14-5-2021

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Short stable page link: https://mikrotax.org/radiolaria/index.php?id=204251 Go to Archive.is to create a permanent copy of this page - citation notes



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