Compare Cymbopleura amphicephala
Compare
Cymbopleura naviculiformis has somewhat larger and more dorsiventral valves, with a large rounded central area and a lateral raphe. Cymbopleura anglica has larger valves, a lateral raphe, and a larger central area. Cymbopleura frequens has lanceolate valves and rostrate to apiculate apices. The apices of C. frequens are not bent to the ventral side, or only slightly deflected ventrally. Cymbopleura similiformis has more linear valves with capitate apices.
LM scalebar = 10 µm
Length Range
19.8-31.8 µm
19.8-31.8 µm
Width Range
6.4-8.7 µm
6.4-8.7 µm
Striae in 10 µm
12-16 at center valve, up to 18 at the ends
12-16 at center valve, up to 18 at the ends
Cymbopleura naviculiformis
Length Range
35-40 µm
35-40 µm
Width Range
9.1-11.4 µm
9.1-11.4 µm
Striae in 10 µm
10-16 at center valve, 15-19 at the ends
10-16 at center valve, 15-19 at the ends
Cymbopleura anglica
Length Range
39-52 µm
39-52 µm
Width Range
13.0-18.2 µm
13.0-18.2 µm
Striae in 10 µm
10-12 on the dorsal side in the valve center, slightly higher density on ventral side and near apices
10-12 on the dorsal side in the valve center, slightly higher density on ventral side and near apices
Cymbopleura frequens
Length Range
19.6-43.5 µm
19.6-43.5 µm
Width Range
7.5-9.0 µm
7.5-9.0 µm
Striae in 10 µm
12-14 in the valve center, up to 16 near the apices
12-14 in the valve center, up to 16 near the apices