Monumentum Fragments of plaque from Circo Massimo The inscription mentions the Pater Cossio Atiano. The New Mithraeum29 Jan 2022 The full article is reserved for our members. Log in or create a free account to access the entire site.On fragments of a marble slab. L.H. 0.02. ... ub sedente / Cossio / [A]tiniano / patre. Pietrangeli, 30, 3.