Compare Diatoma problematica
Diatoma moniliformis has smaller and more elliptical valves.
Diatoma tenuis has frustules biconcave in girdle view, and linear valves with capitate apices.
Diatom ehrenbergii is wider, with capitate to subcapitate apices.
LM scalebar = 10 µm
Length Range
6.6-43.4 µm
6.6-43.4 µm
Width Range
3-5 µm
3-5 µm
Striae in 10 µm
>40
>40
Length Range
10–40 µm
10–40 µm
Width Range
2.5-6.0 µm
2.5-6.0 µm
Striae in 10 µm
50-60
50-60
Length Range
20-85 µm
20-85 µm
Width Range
2.9-4.9 µm
2.9-4.9 µm
Striae in 10 µm
45-60
45-60
Length Range
31-121 µm
31-121 µm
Width Range
4.5-9.3 µm
4.5-9.3 µm
Striae in 10 µm
35-40
35-40
