Priacanthus sp.
Oligocene
Menilite Formation
Outer Carpathians, Krepac, Poland

20mm on 46mm matrix. The living priacanthids are called “Bigeyes” and are found all over the world.

See: Jerzmanska, A. N. N. A. (1968). Ichthyofaune des couches à ménilite (Flysch des Karpathes). Acta Palaeontologica Polonica, 13, 379-481.