Wikipedia:Articles for deletion/Buffyverse chronology
Yes, it does (though it uses the equivalent term attributable).  Please see #What is original research?.  It states that "Original research is material that cannot be attributed to a reliable source." and contrasts this with "unsourced material", which is attributable but not yet attributed
— User:Black, 19:05, 1 March 2007 (UTC)
Stance: comment
Cited policy: WP:NOR (Wikipedia:No original research)