Overview

Comprehensive Description

Description

Shell spherical, with large circular or roundish pores of unequal size, two to four times as broas as the bars. Ten to twelve pores in the half meridan of the shell. Margin of every porewith a coronal of six to nine short and acute spines, not longer htan half the diameter of the pores. No spines between the pores.  Dimensions. -- Diameter of the shell 0.16 to 0.2, of the pores 0.02 to 0.03; length of the spines 0.008 to 0.012.
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Ecology

Habitat

Depth range based on 8 specimens in 1 taxon.
Water temperature and chemistry ranges based on 7 samples.

Environmental ranges
  Depth range (m): 0 - 1000
  Temperature range (°C): 3.939 - 27.560
  Nitrate (umol/L): 0.353 - 43.744
  Salinity (PPS): 33.266 - 34.690
  Oxygen (ml/l): 0.462 - 5.724
  Phosphate (umol/l): 0.298 - 3.273
  Silicate (umol/l): 2.051 - 120.021

Graphical representation

Depth range (m): 0 - 1000

Temperature range (°C): 3.939 - 27.560

Nitrate (umol/L): 0.353 - 43.744

Salinity (PPS): 33.266 - 34.690

Oxygen (ml/l): 0.462 - 5.724

Phosphate (umol/l): 0.298 - 3.273

Silicate (umol/l): 2.051 - 120.021
 
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