Delicatophycus canadensis has lunate valves with a tumid ventral margin and reverse-lateral proximal raphe ends. Cymbopleura incerta and other small Cymbopleura species have wider valves (>5 µm wide), lower stria density and differing valve shapes.

LM scalebar = 10 µm
Length Range
20-32 µm
Width Range
4.2-4.9 µm
Striae in 10 µm
17-21 at valve center, up to 28 at the apices
Cymbopleura Tundraphila LM1
Cymbopleura Tundraphila LM2
Cymbopleura Tundraphila LM3
Cymbopleura Tundraphila LM4
Cymbopleura Tundraphila LM5
Cymbopleura Tundraphila LM1 Cymbopleura Tundraphila LM2 Cymbopleura Tundraphila LM3 Cymbopleura Tundraphila LM4 Cymbopleura Tundraphila LM5
Length Range
23-36 µm
Width Range
4.1-5.4 µm
Striae in 10 µm
18-22 dorsal, 20-25 ventral
Delicata canadensis LM1 Delicata canadensis LM2 Delicata canadensis LM4 Delicata canadensis LM3 Delicata canadensis LM5 Delicata canadensis LM6

Cymbopleura incerta

(Grunow) Krammer 2003

Length Range
31-58 µm
Width Range
7.3-10.2 µm
Striae in 10 µm
15-16 at the valve center, 18-20 near the apices
Cymboincerta2 Cymboincerta3 Cymboincerta5 Cymboincerta6 Cymboincerta7