Ampyx (trilobite)

Ampyx is a Ordovician-Silurian genus of Asaphid trilobites of the family Raphiophoridae. Species of Ampyx are characterized by three extended spines on the head-shield, one spine derived from each free cheek, and one spine emanating from the glabellum.[1] Species include Ampyx linleyensis (Lanvirn-Caradoc series).[2]

Species of Ampyx grew to an average length of 1.5 inches (3.8 cm).