Spaulding, S.,
Edlund, M.
(2008).
Microcostatus.
In Diatoms of North America.
Retrieved October 15, 2024, from https://diatoms.org/genera/microcostatus
Symmetric Biraphid
Microcostatus
Central sternum prominent
Axial depressions present
Axial depressions contain small costae
Frustules of Microcostatus are small in size. The axial area includes lyre-shaped depressions on both sides of the prominent sternum. The depressions contain small costae (microcostae) in a depression near the axial area. Striae are not typically visible with the light microscope. SEM reveals striae are present and comprised of single...