Nabataean Aramaic
Human language
Nabataean Aramaic is the extinct Aramaic variety used in inscriptions by the Nabataeans of the East Bank of the Jordan River, the Negev, and the Sinai Peninsula. Wikipedia
Language family: Western Aramaic languages
Extinct: Written form merged with Arabic during the early Islamic era c. AD 650
Region: Arabia Petraea
Writing system: Nabataean alphabet