Thubursicum Numidarum: Roman city in Numidia, modern Khamissa.
- The name suggests that this was originally a Numidian hillfort.
- Perhaps one of the towns that supported Tacfarinas.note[Tacitus, Annals 4.24.]
- Early forum with basilica
- Expansion: new urban center with baths, arch, temples, theater
- In the east of the site is the Ain el-Youdi, a large pool with a sanctuary; the source of the river Medjerda, which flows to the east, to Bulla Regia, and empties itself in the Mediterranean Sea near Utica.
- A Roman colonia before 270 CE
- Repairs during the reign of Constantine the Great (Old Forum)
- Seat of a bishopric; churches
- c.369/370: New Forum
- Visited at least twice by Augustine
- c.430-533/534: Vandal domination of the region
- 533/534: Byzantine rule (fortress)
- Seventh century: Arab conquest.