(Also Julius Obsequens). Roman writer, who is said to have flourished in the middle of the fourth century AD. The only work associated with his name is the Liber de prodigiis (Book of Prodigies), completely extracted from an epitome, or abridgment, written by Livy; De prodigiis was constructed as an account of the wonders and portents that occurred in Rome between 249-12 BC.

The work was first printed by the Venetian humanist, Aldus Manutius, in 1508, after a manuscript belonging to Jodocus of Verona (now lost). Later editions were printed by F. Oudendorp (Leyde, 1720) and O. Jahn (1853, with the periochae of Livy).

An curious, if not important, aspect of Obsequens’ work are the references made to unidentified flying objects (UFOs) observed flying through the air. For the year 99 BC, for example, Obsequens writes, "When C. Murius and L. Valerius were consuls, in Tarquinia towards sunset, a round object, like a globe, a round or circular shield, took its path in the sky from west to east." In 90 BC, he reports that, "At Aenariae , while Livius Troso was promulgating the laws at the beginning of the Italian war, at sunrise, there came a terrific noise in the sky, and a globe of fire appeared burning in the north. In the territory of Spoletum , a globe of fire, of golden color, fell to the earth gyrating. It then seemed to increase in size, rose from the earth and ascended into the sky, where it obscured the sun with its brilliance. It revolved toward the eastern quadrant of the sky." Finally, Obsequens provided another example of this phenomenon for the year 42 BC, stating simply that “something like a sort of weapon, or missile, rose with a great noise from the earth and soared into the sky."