Denticula rainierensis and D. subtilis both have apiculate apices, unlike D. creticola. Denticula rainierensis also has a slight constriction at mid-valve and rounded nodules at the junction of each fibula with the raphe canal.

LM scalebar = 10 µm
Denticula creticola LM1 Denticula creticola LM4 Denticula creticola LM2 Denticula creticola LM3 Denticula creticola LM6 Denticula creticola LM7 Denticula creticola LM5
Length Range
9.0-11.2 µm
Width Range
2.5-2.8 µm
Striae in 10 µm
> 40

Denticula subtilis

Grunow 1862

Denticula subtilis LM1 Denticula subtilis LM2 Denticula subtilis LM3 Denticula subtilis LM4 Denticula subtilis LM5 Denticula subtilis LM6 Denticula subtilis LM7
Length Range
7.4-20.6 µm
Width Range
2-3 µm
Striae in 10 µm

Also compare to

Denticula rainierensis

Sovereign 1963