Compare

Cymbopleura anglica has a smaller size range. Cymbopleura apiculata and C. subcuspidata have narrower apices and more dorsiventral valves with more strongly arched dorsal margins. Cymbopleura apiculata and C. subcuspidata also have proximal raphe ends shaped like crochet hooks. Cymbopleura elliptica has more symmetric, that is, less dorsiventral valves and subcapitate to capitate apices.

LM scalebar = 10 µm
Cymbopleura tynnii LM1 Cymbopleura tynnii LM2 Cymbopleura tynnii LM3 Cymbopleura tynnii LM4 Cymbopleura tynnii LM5
Length Range
59.6-82.3 µm
Width Range
15.7-18.6 µm
Striae in 10 µm
10-13 near the valve center, up to 18 near the ends

Cymbopleura anglica

(Lagerstedt) Krammer 2003

Cymbopleura anglica LM1 Cymbopleura anglica LM2 Cymbopleura anglica LM3 Cymbopleura anglica LM4 Cymbopleura anglica LM5 Cymbopleura anglica LM6 Cymbopleura anglica LM7
Length Range
39-52 µm
Width Range
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

Cymbopleura subcuspidata

(Krammer) Krammer 2003

Cymbopleura subcuspidata LM1 Cymbopleura subcuspidata LM2 Cymbopleura subcuspidata LM3 Cymbopleura subcuspidata LM5 Cymbopleura subcuspidata LM6
Length Range
67-111 µm
Width Range
19-25 µm
Striae in 10 µm
9-12 (dorsal and ventral) at the valve center; 12-15 (dorsal) and 13-16 (ventral) at the apices

Cymbopleura apiculata

Krammer 2003

Cymboapiculata1 Cymboapiculata2 Cymboapiculata3 Cymboapiculata4 Cymboapiculata5 Cymboapiculata6
Length Range
70-86 µm
Width Range
24-28 µm
Striae in 10 µm
8-10 (dorsal) and 9-11 (ventral) at the valve center; 13-15 (dorsal) and 14-16 (ventral) at the apices

Cymbopleura elliptica

Krammer 2003

Cymbopleura elliptica LM1 Cymbopleura elliptica LM2 Cymbopleura elliptica LM3 Cymbopleura elliptica LM4 Cymbopleura elliptica LM5 Cymbopleura elliptica LM6 Cymbopleura elliptica LM7
Length Range
38-49 µm
Width Range
10.8-11.9 µm
Striae in 10 µm
10-13 at the valve center, 15-16 near the apices