Overview

Comprehensive Description

At hydrothermal vents.
  • OKUTANI T.K., KOJIMA S. & D. KIM (2004) Venus 63: 29-32.

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Distribution

Western Pacific: Edison Seamount.
  • OKUTANI T.K., KOJIMA S. & D. KIM (2004) Venus 63: 29-32.

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Physical Description

Morphology

Shell rather large, moderately thick, elongateoval, dorsal and ventral margin almost parallel in their middle part. Umbones not prominent, prosogyrous, situated anteriorly at 1/4 to 1/5 of shell length. Surface with irregular commarginal growth lines, periostracum thin, yellowish-straw-coloured, on earlier parts of the valves more or less eroded. Hinge plate strong but not very broad, typical for Calyptogena, with three cardinals in each valve.
  • OKUTANI T.K., KOJIMA S. & D. KIM (2004) Venus 63: 29-32.

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Size

Shell length up to 100 mm.
  • OKUTANI T.K., KOJIMA S. & D. KIM (2004) Venus 63: 29-32.

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Ecology

Habitat

Depth range based on 12 specimens in 1 taxon.
Water temperature and chemistry ranges based on 3 samples.

Environmental ranges
  Depth range (m): 1440 - 1606
  Temperature range (°C): 2.889 - 3.220
  Nitrate (umol/L): 38.725 - 39.848
  Salinity (PPS): 34.594 - 34.601
  Oxygen (ml/l): 2.221 - 2.678
  Phosphate (umol/l): 2.676 - 2.866
  Silicate (umol/l): 115.868 - 115.995

Graphical representation

Depth range (m): 1440 - 1606

Temperature range (°C): 2.889 - 3.220

Nitrate (umol/L): 38.725 - 39.848

Salinity (PPS): 34.594 - 34.601

Oxygen (ml/l): 2.221 - 2.678

Phosphate (umol/l): 2.676 - 2.866

Silicate (umol/l): 115.868 - 115.995
 
Note: this information has not been validated. Check this *note*. Your feedback is most welcome.

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