Compare Eunotia diadema
Compare
Eunotia triodon, Eunotia tetraodon, and Eunotia serra have 3, 4 and as many as 22 undulations, respectively. A specimen of E. serra with 6 undulations may be distinguished from E. diadema by having shallower undulations and a tendency for the terminal undulations to coalesce with the apices. Eunotia bilii has a flat ventral margin and narrower apices.
LM scalebar = 10 µm
Length Range
34-65 µm
34-65 µm
Width Range
14-26 µm
14-26 µm
Striae in 10 µm
7-10 in the valve center, 12-17 near the apices
7-10 in the valve center, 12-17 near the apices
Eunotia triodon
Length Range
47-74 µm
47-74 µm
Width Range
15-23 µm
15-23 µm
Striae in 10 µm
15-18 near valve center, 19-21 near the ends
15-18 near valve center, 19-21 near the ends
Eunotia tetraodon
Length Range
37-51 µm
37-51 µm
Width Range
14.2-18.8 µm
14.2-18.8 µm
Striae in 10 µm
8-10 in the valve center, 12-15 at the apices
8-10 in the valve center, 12-15 at the apices
Eunotia serra
Length Range
60-134 µm
60-134 µm
Width Range
18-24 µm
18-24 µm
Striae in 10 µm
9-13 in the valve center, 14-19 near the apices
9-13 in the valve center, 14-19 near the apices
Eunotia bilii
Length Range
29-50 µm
29-50 µm
Width Range
10-13 µm
10-13 µm
Striae in 10 µm
7-10 in the center valve, 10-16 at the ends
7-10 in the center valve, 10-16 at the ends