3. EUPODISCEÆ
Aulacodiscinæ.—Valves with mammiform elevations near the border surmounted by nipple-like processes.
AULACODISCUS—THE ONLY GENUS AS ABOVE
Eupodiscinæ.—Valves with ocelli.
(1) Actinocyclus.—Valve with one small ocellus; striæ radial.
(2) Eupodiscus.—Valve with one or more ocelli; striæ not radial.
(3) Auliscus.—Valve with large, elevated ocelli. Central area hyaline. Markings granular and costate.
(4) Pseudauliscus.—Valve with radiating granules. No central space.
Aulacodiscus Ehr. (1844) em. Rattr. (1888)
(aulax, a furrow, and discus)