provenance study; Proconnesian marble.

The article aims to present results of the analysis of stone artefacts (fragments of architectural decoration, sarcophagi, opus sectile) from the late antique basilica and adjacent medieval monastery of San Severo in Classe (Ravenna, Italy). The research is focused on the qualitative and quantitative study of stone artefacts with regards on signs of their reuse. A hypothesis of the application of late antique materials in medieval reconstructions of San Severo monastic complex is discussed on the basis of lithotype and provenance study of stone artefacts and the late antique marble trade in the Mediterranean.