Diatoms of North AmericaDiatoms of North America
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Compare Oxyneis binalis

(Ehrenb.) Round 1990

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Oxyneis binalis var. elliptica has smaller, elliptic valves. Septae count is lower (4 in 10 µm) and stria density is lower (14-16 in 10 µm). Oxyneis apporrecta, an extinct Eocene taxon, has more narrow valves.

LM scalebar = 10 µm
Oxyneis binalis LM8 Oxyneis binalis LM4 Oxyneis binalis LM1 Oxyneis binalis LM7 Oxyneis binalis LM2 Oxyneis binalis LM5 Oxyneis binalis LM3
Length Range
11.7-20.1 µm
Width Range
2.2-3.7 at the valve center, 6.3-8.4 at the widest part of the valve µm
Striae in 10 µm
16-18 at center valve

Oxyneis binalis var. elliptica

(Flower) Kingston 2000

Oxyneis binalis var elliptica LM6 Oxyneis binalis var elliptica LM5 Oxyneis binalis var elliptica LM4 Oxyneis binalis var elliptica LM2 Oxyneis binalis var elliptica LM1
Length Range
9.3-9.8 µm
Width Range
3.5-4.5 µm
Striae in 10 µm
14-16

Also compare to

Oxyneis apporrecta

Siver, Wolfe and Edlund