Identify.

Altar of Domitius Ahenbarbus, relief, ca. 100 BCE, Musee Louvre, Paris, Roman style side, sacrifice scene to Mars, Roman citizens in sensus, Roman altar, suovetaurilia (old form of roman sacrifice), size of figures changes based on the person's importance (hierarchy of scale), common in Roman art to see Roman citizens and gods working in the same scene, much more static, possibly done later