Tiberious and Germanicus were part of what empire?
Germanicus Germanicus (24 May 15 BC – 10 October AD 19), formally Germanicus Julius Caesar, was heir-designate of the Roman Empire under Tiberius and a prominent general known for his campaigns in Germania.
Severan art Severan art is art production by the Roman Empire under the Severan dynasty, usually taken as running from 193 to 235, through the emperors Septimius Severus, Caracalla, Heliogabalus and Alexander Severus. Official Roman art of the military anarchy which followed, ending in 253 with Gallienus, has no character of its own and so can be seen as a continuation of Severan art, and so that art can be seen as running for the whole first half of the 3rd century.