Cystophormis ob

Taxonomy

Catalog entries: Cystophormis ob

Original description: Cephalis rather thin-walled, distinctly multilobated. Peristome short. About 6-8 longitudinal rows of the pores on a half of the equator of the thorax. Pores arrangement may be irregular. Pores rather large, 3-5 in one row. Miocene. Early Miocene specimens have thicker walls than the typical middle-late Miocene specimen. Description is based on 13 specimens from Site 278 (Core 12, Section 1 to Core 26, Section 6). Holotype No. 63217 in the collection of Marine Hydrobiology of Zoological Institut. Form B species is named after the Soviet Explorer Antarctic Ship Ob. Species differs from all known species of Carpocanids by the fewer pores and the thin-walled cephalis. It is closer to C. favosa gr., the difference being the absence in C. ob of the characteristic for C. favosa peristom and the fewer number of large pores in C. ob.

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: Cystophormis ob, synonyms included - Carpocanistrum ob; Cystophormis ob; Pterycorys ob;
• See also space-time plot :: Samples map :: Parent: Cystophormis

Cystophormis ob 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=203810 Go to Archive.is to create a permanent copy of this page - citation notes

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