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Cymbopleura inaequalis is generally larger, although the size ranges of the two species overlap. Smaller valves of C. inaequalis may be distinguished by having a lower areola density (< 20 in 10 ┬Ám).

LM scalebar = 10 µm
Cymbopleura lata LM1 Cymbopleura lata LM2 Cymbopleura lata LM3 Cymbopleura lata LM4 Cymbopleura lata LM5 Cymbopleura lata LM6 Cymbopleura lata LM7
Length Range
46-87 µm
Width Range
17.0-20.9 µm
Striae in 10 µm
8-10 at the valve center, 12-14 near the apices

Cymbopleura inaequalis

(Ehrenb.) Krammer 2003

Cymbopleura inaequalis LM1 Cymbopleura inaequalis LM2 Cymbopleura inaequalis LM3 Cymbopleura inaequalis LM5 Cymbopleura inaequalis LM4 Cymbopleura inaequalis LM6 Cymbopleura inaequalis LM7
Length Range
86-190 µm
Width Range
30-40 µm
Striae in 10 µm
5-8 near the valve center, 8-12 near the apices