72 Length (apical axis): 60-84 μm (Hendey, 1964; Sykes, 1981); 50-90 μm (Isamu, 1991; Tomas, 1997); 60-75 μm (Al-Yamani et al., 2019) Width (pervalvar axis): 30-50 μm (Cupp, 1943); 30-40 μm (Hendey, 1964; Sykes, 1981; Tomas, 1997)；38-46 μm (Al-Yamani et al., 2019) 粒徑 長（頂軸）：60到84微米（Hendey, 1964; Sykes, 1981）；50到90 微米（山路勇， 1991；Tomas, 1997）； 60到75微米（Al-Yamani et al., 2019） 寬（貫殼軸）：30 到50微米（Cupp, 1943）；30到40微米 （Hendey, 1964; Sykes, 1981；Tomas, 1997）；38到46微米(Al-Yamani et al., 2019) Synonyms 同種異名 Navicula membranacea Cleve 1897 Stauroneis membranacea (Cleve) Hustedt 1959 Stauropsis membranacea (Cleve) Meunier 1910
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