Auzia probably took the name from the Berber pagan god "Auzius", because under Augustus a Roman castrum was founded near a small Berber village with that name  The city constituted of a castrum (fort) and a vicus (small city): Auzia achieved autonomous status as municipium in the second century and later was renamed Colonia Septima Aurelia Auziense by emperor Septimius Severus. As a Roman colonia, its people received full status of Roman citizenship rights.
Auzia, according to historian Lawless, was a vicus that achieved independent status from the castrum (fort) garrison and had a forum (market square) and an important pagan temple, later converted into a Christian church. The Roman settlement (probably with nearly 4,000 inhabitants around 200 AD) was surrounded by farms
Auzia had even a theater and a small "circus" for chariot races, created around 227 AD according to epigraphic evidence
Auzia achieved prosperity mainly because it was at the center of some roads in Roman Africa: from Auzia there were roads toward the Mediterranean sea (Caesarea) and the Saharan interior with the Atlas mountains.
It was reduced to a small village when Arabs conquered the region at the end of the seventh century.
Former and titular bishopric
Christianity was present in the Auzia area during the third century. It achieved the status of episcopal see.
The Ancient bishopric Auzia was nominally revived in 1594 as a Roman Catholic titular see of the lowest (episcopal) rank. It had many incumbents until its suppression in 1913.
It was restored in 1933, and since was nearly continuously filled.
- History of Auzia (in French)
- Lawless, R. Mauretania Caesartiensis: anarcheological and geographical survey Section: The Roman Civilian Sites. p.122-195
- Auzia "Circus"
- Auzia as center of roads in Mauretania
- Lawless, R. Mauretania Caesartiensis: anarcheological and geographical survey. Durham University. Durham, 1969 Auzia
- Smith Reid, James. The Municipalities of the Roman Empire The University of Michigan Press. Chicago, 1913