Didymocyrtis violina


Classification: rads_cenozoic -> Coccodiscidae -> Didymocyrtis -> Didymocyrtis violina
Sister taxa: D. antepenultima, D. avita, D. bassanii, D. didymus, D. laticonus, D. mammifera, D. penultima, D. prismatica, D. tetrathalamus, D. tubaria, D. violina, D. sp.

Taxonomy

Citation: Didymocyrtis violina (Haeckel) Sanfilippo and Riedel 1980
Rank: species
Basionym: Cannartus violina
Taxonomic discussion: (Haeckel) 1887; Sanfilippo and Riedel 1980

Catalog entries: Cannartus violina

Original description: Pores of the shell subregular, circular, twice to three times as broad as the bars; eighteen to twenty on the half meridian, fourteen to sixteen on the half equator. Shell-wall in the "tropical zone" of both halves thickened. Polar tubes nearly cylindrical, about as long as the main axis, distal ends broken off.

Main axis 140µm, equatorial axis 90µm; meshes 8µm, bars 3µm; length of the polar tubes 120µm, breadth 20 to 30µm.
Remarks on original description: [Stratigraphic information for LM21 from Riedel, 1959b, p.287.
Haeckel includes a second figure, fig.10a, on pl.39, but does not mention it in the figure description.]

Description

Biogeography and Palaeobiology

Biostratigraphic distribution

Geological Range:
Last occurrence (top): within Neogene Period (2.59-23.03Ma, top in Piacenzian stage). Data source: Lazarus et al. 2015 - "N age group"
First occurrence (base): within Neogene Period (2.59-23.03Ma, base in Aquitanian stage). Data source: Lazarus et al. 2015 - "N 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

Sanfilippo, A. & Riedel, W. R. (1980). A revised generic and suprageneric classification of the Artiscins (Radiolaria). Journal of Paleontology. 54(5): 1008-1011. gs


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Didymocyrtis violina compiled by the radiolaria@mikrotax project team viewed: 25-11-2020

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Short stable page link: http://mikrotax.org/radiolaria/index.php?id=203955 Go to Archive.is to create a permanent copy of this page - citation notes



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