Stichocorys johnsoni

Taxonomy

Catalog entries: Stichocorys johnsoni

Original description: Shell with four (or more?) segments, distinctly separated by constrictions, the first three segments together forming a conical section. Cephalis subspherical, rough, poreless, and bearing a slightly curved apical horn generally longer than the first segment. Thorax subspherical, well developed, having 20-30 irregularly arranged subcircular pores. Third segment conical, longer and broader than any other, bearing two kinds of pores: ordinary small pores on the whole surface and a single row of pores twice as large as the others just below the lumbar stricture. Fourth segment generally ragged with smaller pores irregularly arranged. Entire apertural margin never observed.
Remarks on original description: This species was first described from Indian Ocean material. Pacific Ocean forms of this species generally lack an indentation on the third segment.

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:

• 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: Stichocorys johnsoni, synonyms included - Stichocorys johnsoni; Stichocorys johnsonii;
• See also space-time plot :: Samples map :: Parent: Stichocorys

Stichocorys johnsoni compiled by the radiolaria@mikrotax project team viewed: 8-2-2026 Taxon Search: Advanced Search Short stable page link: https://mikrotax.org/radiolaria/index.php?id=205596 Go to Archive.is to create a permanent copy of this page - citation notes

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