Amphipleura arctica Patr. and Freese
Length:39

 Width:5

 Striae:25






























Collection 1470a

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Authority information

Amphipleura arcticaPatrick and Freese, Proc. Acad. Nat. Sci. Philadelphia, 112:170, pl. 1, fig. 14. 1960. (Stoermer and Yang 1969).

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This image was taken utilizing DIC for the specimen above.




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This taxon has a linear valve and the raphe valve is about 1/4th the length of the valve. The central area is elongate and there is a distinct line. The striae of this taxon are parallel in the middle and convergent at the ends(Patrick and Freese 1960).




  • Ecology
    Prefers brackish water(Patrick and Freese 1960)..

    Size ranges and morphology

  • Length is 31 to 35 micrometers(Patrick and Freese 1960).
  • Width is 3 to 4 micrometers(Patrick and Freese 1960).
  • Striae are 24 to 32 in 10 micrometers(Patrick and Freese 1960).