Dicerodiscus is an extinct genus from a well-known class of fossil marine arthropods, the trilobites.

Dicerodiscus is unique for an eodiscoid in having conspicuous and curved spines that are attached anteriorly, and at their base are directed outward perpendicular to the midline, before gradually bending further backwards.

[2] Like all Agnostida, Dicerodiscus is diminutive and the headshield (or cephalon) and tailshield (or pygidium) are of approximately the same size (or isopygous) and outline.

The most backward part of the glabella (called occipital ring or LO) usually carries small spine.

The cephalon carries a pair of long, anteriorly fixed spines, running sideways from frontal border before curving gradually backwards.