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In Sellaphora japonica, rounded apices are broader, relative to maximum cell breadth, than they are in either S. javanica or S. subfasciata. Additionally, S. javanica does not have a central area bounded by shortened, marginal striae. While S. subfasciata does have this feature, the striae do not alternate in length as consistently or noticeably as they do in S. japonica. Lastly, central striae in S. javanica are less dense and uniformly spaced than central striae in S. japonica.

LM scalebar = 10 µm
Sellaphora japonica LM4 Sellaphora japonica LM6 Sellaphora japonica LM2 Sellaphora japonica LM7 Sellaphora japonica LM3 Sellaphora japonica LM1 Sellaphora japonica LM5
Length Range
13-24.5 µm
Width Range
5.4-6.1 µm
Striae in 10 µm
24-26 at mid-valve, 28 at the ends

Sellaphora javanica

Wetzel 2015

Sellaphora javanica LM5 Sellaphora javanica LM1 Sellaphora javanica LM2 Sellaphora javanica LM3 Sellaphora javanica LM4
Length Range
15-19 µm
Width Range
4.3-5.5 µm
Striae in 10 µm
19-24

Sellaphora subfasciata

Potapova 2013

Gc44259  Nasubfasciata  Holo A Gc44259  Nasubfasciata Not Type1A Gc44264A  Falatelolong 3 Gc44264A  Sesubfasciata 3Zeiiss Gc44264A  Sesubfasciata 1
Length Range
14-18 µm
Width Range
3.6-4.5 µm
Striae in 10 µm
26-28 in the center valve, 30-32 at the ends