Compare

Fallacia latelongitudinalis differs from F. ecuadoriana by apical openings between conopeum and valve margin. Sellaphora wallacei has more narrow valves with drawn-out apices and it lacks a conopeum.

LM scalebar = 10 µm
Fallacia latelongitudinalis LM2 Fallacia latelongitudinalis LM3 Fallacia latelongitudinalis LM4 Fallacia latelongitudinalis LM5 Fallacia latelongitudinalis LM1 Fallacia latelongitudinalis LM6
Length Range
22-32 µm
Width Range
4.6-5.6 µm
Striae in 10 µm
45-50

Sellaphora wallacei

(Reimer) Potapova and Ponader 2008

Gc105959  Gsn95451 3 Gc105959  Gsn95451 7 Gc105959  Gsn95451 4 Gc105959  Gsn95451 5 Gc105959  Gsn95451 9 Gc105959  Gsn95451 8 Gc105959  Gsn95451 6
Length Range
16-26 µm
Width Range
4.1-4.7 µm
Striae in 10 µm
40-48

Also compare to

Fallacia ecuadoriana

Lange-Bert. and Rumrich in Rumrich et al.