Cavinula vincentii differs from C. pseudoscutiformis by the valve shape and areolae; both are more round in C. pseudoscutiformis. Furthermore, the areolae of C. vincentii are elongated near the central area, although this character may be difficult to discern in LM. Enlarged, pore-like fissures at the apices distinguish C. vincentii from C. pseudoscutiformis in SEM. Cavinula oculata differs from C. vincentii by a more recessed external raphe, occluded areolae, a lack of elongated areolae near the central area and a valve face with a greater degree of curvature than C. vincentii.

LM scalebar = 10 µm
Cavinula vincentii LM4 Cavinula vincentii LM1 Cavinula vincentii LM2 Cavinula vincentii LM3 Cavinula vincentii LM5
Length Range
12-15 µm
Width Range
8-11 µm
Striae in 10 µm

Cavinula pseudoscutiformis

(Hust.) D.G.Mann and Stickle in Round, R.M.Crawford and D.G.Mann 1990

Cavinula pseudoscutiformis LM2 Cavinula pseudoscutiformis LM1 Cavinula pseudoscutiformis LM4 Cavinula pseudoscutiformis LM5 Cavinula pseudoscutiformis LM3
Length Range
5.5-10.0 µm
Width Range
4.9-9.3 µm
Striae in 10 µm
16-24 in the center valve

Also compare to

Cavinula oculata

D.Anton. and Hamilton