Otosphaera auriculata

Taxonomy

Catalog entries: Otosphaera auriculata

Original description: Shell quite irregular, of extremely variable form, now inclining to roundish, now to polyhedral, with very numerous small pores, irregularly formed and distributed. Twelve to twenty-four pores in the half meridian of the shell, of very different size, for the most part larger than the bars. Porous tubuli of the shell of variable number (in one and the same colony), one to five, mostly three or four, of conical form, irregularly formed and scattered, commonly about half as long as the radius of the shell. Outer aperture of the tubuli obliquely truncated, with one large prominent, often curved, acute tooth.

Diameter of the shell 0.1 to 0.2, of the pores 0.003 to 0.005; length of the tubuli 0.01 to 0.05, inner aperture 0.04, outer aperture 0.03.
Remarks on original description: [Stratigraphic information for LM21 from Riedel, 1959, p.287.]

Description

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 (0-2.59Ma, base in Gelasian stage). Data source: Lazarus et al. 2015 - "R 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: Otosphaera auriculata, synonyms included - Otosphaera auriculata;
• See also space-time plot :: Samples map :: Parent: Otosphaera

Otosphaera auriculata compiled by the radiolaria@mikrotax project team viewed: 4-12-2023 Taxon Search: Advanced Search Short stable page link: https://mikrotax.org/radiolaria/index.php?id=204852 Go to Archive.is to create a permanent copy of this page - citation notes

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