nonextant in WordNet English dictionary

1. no longer in existence; lost or especially having died out leaving no living representatives
   "an extinct species of fish"; "an extinct royal family"; "extinct laws and customs"
   extinct  nonextant 
   
2. no longer existing or inaccessible through loss or destruction
   "its nonextant original was written on vellum"- G.B.Saul
   nonextant