The Illyrian Shepherd was a dog breed registered with the Fédération Cynologique Internationale FCI since 1939 under Standard number 41 Illirski Ovcar. In 1957 the FCI changed the name of the breed to Yugoslavian Shepherd Dog Sharplanina (Šarplaninac). Up to 16 March 1968 the Karst Shepherd (kraški ovčar) carried the same name. Since then the two breeds are independent.
References
Illyrian Shepherd Wikipedia(Text) CC BY-SA