Dictyophimus okadai

Taxonomy

Catalog entries: Dictyophimus okadai

Original description: Shell of three segments; cephalis subspherical. penetrated by numerous small pores with polygonal pore frames, bearing two horns, an apical and a vertical. The horns are of the same length, stout and triangular in section. Collar stricture rather distinct externally, internally with four collar pores. Cephalic structure has A, V, MB, two L and D. Two L and D extend as ribs to stout lateral wings originating at the collar region. Thorax conical or subhemispherical, penetrated by many circular pores regularly arranged with hexagonal pore frames. Three solid lateral wings extend from the lowermost part of the thorax. Abdomen short, cylindrical and smooth-surfaced with remarkably large pores often arranged in transverse rows.

Description

Biogeography and Palaeobiology

Biostratigraphic distribution

Geological Range:
Last occurrence (top): within Paleogene Period (23.03-66.04Ma, top in Chattian stage). Data source: Lazarus et al. 2015 - "P age group"
First occurrence (base): within Paleogene Period (23.03-66.04Ma, base in Danian stage). Data source: Lazarus et al. 2015 - "P age group"

Plot of occurrence data:

• Range-bar - range as quoted above, pink interval top occurs in, green interval base occurs in.
• Triangles indicate an event for which a precise placement has been suggested.
• Histogram - Neptune occurrence data from DSDP and ODP proceedings. Pale shading <50 samples in time bin. Interpret with caution & read these notes
• Taxon plotted: Dictyophimus okadai, synonyms included - Dictyophimus (?) okadai;
• See also space-time plot :: Samples map :: Parent: Dictyophimus

Dictyophimus okadai compiled by the radiolaria@mikrotax project team viewed: 22-7-2026 Taxon Search: Advanced Search Short stable page link: https://mikrotax.org/radiolaria/index.php?id=203919 Go to Archive.is to create a permanent copy of this page - citation notes

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