 The relief scenes of Hellenistic art became even more densely crowded in later Roman sarcophagi, as for example in the 2nd-century Portonaccio sarcophagus, and various styles and forms emerged, such as the columnar type with an "architectural background of columns and niches for its figures".A well-known Early Christian example is the Sarcophagus of Junius Bassus, used for an important new convert who died in 359.Many sarcophagi from leading centres were exported around the Empire.