A number of ancient European and Ancient Near Eastern languages are not listed in E16/E17/E18/E19/E20/E21/E22/E23/E24/E25/E26/E27. One of them is Urartian ( Warren C. Benedict 1958 ).
Glottolog
[xur] at ISO 639-3
[xur] at OLAC
[xur] at IMTVault
Wikidata
Wikipedia