Compare Gyrosigma obtusatum
Gyrosigma sciotoense has wider valves, an asymmetric central area, and external proximal raphe ends curved in opposite directions.
LM scalebar = 10 µm
Length Range
53-154 µm
53-154 µm
Width Range
8-15 µm
8-15 µm
Striae in 10 µm
22-26
22-26
Length Range
67-94 µm
67-94 µm
Width Range
10-12 µm
10-12 µm
Striae in 10 µm
19-20 transapical striae; 20-22 longitudinal rows of areolae
19-20 transapical striae; 20-22 longitudinal rows of areolae
