Obsoquens records an ancient UFO sighting

C. Mario L. Valerio coss.

Sub occasu solis orbis clipei similis ab occidente ad orientem visus perferri. 

C. Mario L. Valerio coss.: In the consulship of Gaius Marius and Lucius Valerius (c. 100 BCE)

Under the setting of the sun, a shield-like disc was seen to be moving from the west to the east.

Sub: under

Occasu: the setting (ablative of time)

Solis: of the sun

Orbis: disc

Clipei: of shield

Similis: similar to, like appearance

Ab: from

Occidente: the west

Ad: to

Orientem: the east

Visus: was seen

Perferri: to be moving