This taxon has as leanceolate to linear-elliptic grustule in girdle view. The valve has a convex dorsal margin that is notched in the middle. The ventral margin is straight. The valve is bent as is the apices. The raphe is on the dorsal margin of thevalve. This taxon has radiate costae (Patrick and Reimer 1975).
New England States, Middle Atlantic Statess, Southeastern States, Gulf
Coast States, West Central States, South Central States, lakes States, Plains States, New Mexico, Montana and California (Patrick and Reimer 1975).
Eunotia gibberula Ehrenberg, Phys. Abh. Akad. Wiss. Berlin, 1841:126, pl. 3(4), fig. 8. 1843(Stoermer and Yang 1969).