Plectopyramis dodecomma

Classification: rads_cenozoic -> Theoperidae -> Acropyramiidae -> Plectopyramis -> Plectopyramis dodecomma
Sister taxa: P. dodecomma, P. sp.


Citation: Plectopyramis dodecomma Haeckel 1887
Rank: species
Basionym: Plectopyramis dodecomma
Taxonomic discussion: Haeckel, 1887, p.1258, pl.54, fig.6; Hull, 1993 (ODP 136 SR), pl 3 fig 13

Catalog entries: Plectopyramis dodecomma

Original description: Shell smooth, slenderly pyramidal, with straight outlines. Cephalis conical, obtuse, with thirty-six small square pores (in nine divergent longitudinal rows, each of four pores). Collar septum (between cephalis and thorax) with four distinct collar pores. Thorax pyramidal, with nine very stout and straight angular radial beams, which are connected by ten to fifteen broad horizontal nine angled rings. Each of the large regular, square meshes so produced contains a very delicate fenestra tion, with twelve regular, square pores, separated by two transverse and three longitudinal crossed threads. A very regular and remarkable structure.
Remarks on original description: Haeckel listed Plectopyramis dodecomma under the subgeneric name Enneapleuris, but did not include the subgeneric name in the species name.[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:


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

Hull, D. M. (1993). Quaternary, Eocene, and Cretaceous Radiolarians from the Hawaiian Arch, Northern Equatorial Pacific Ocean. Proceedings of the Ocean Drilling Program, Scientific Results. 136: 3-25. gs


Plectopyramis dodecomma compiled by the radiolaria@mikrotax project team viewed: 19-4-2021

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