Amphion Pander, 1830, non Amphion Hubner, 1816 (the Nessus sphinx, a hawkmoth) Pliomera is a genus of trilobites that lived during the Middle Ordovician on the paleocontinent Baltica, now Norway, Sweden, Estonia and the Russian Federation, and in Argentina.

It can be recognized for its pentagonal glabella widest between the frontal corners, with an inverted V-shaped occipital ring.

The front of the glabella also has three dead-ending furrows, a very short one on the midline and left and right a longer one, directed inward and slightly backward.

The front of the glabella also has three dead-ending furrows, a very short one on the midline and left and right a longer one, directed inward and slightly backward.

It consists of a row of 7 to 9 downward directed denticles along the front of the glabella, which interlocked with corresponding teeth on the pygidium, when the animal protected itself by enrolling.