Fragilaria leptostauronvar.fossilis (Pant.) Rehakova 1965
Length: 37

 Width: 10

Striae:9






























Collection 1158

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Authority information

(Pant.) Rahakova, Rozpr. Ustred. Ust. geol. Ceskoslavokia, 32: 37, pl. 11, figs. 17-18. 1965 (Stoermer and Yang 1969).


More information

Compared to the nominate variety, this variety's valves are elongated at the apical axis and less strongly swollen at the mid section of the valve (Stoermer and Yang 1969).

  • Synonyms (Stoermer and Yang 1969)
    Staurosira harrisonii var. fossilis Pant. 1902


  • Ecology

    Size ranges and morphology

    The maximum size of this variety exceeds the nominate variety. Specimens in the Great Lakes collections reach 45 micrometers in length (Stoermer and Yang 1969).