1) Anachronism 2) Prolepsis 
assigning a date to an event earlier than actual
• (n.) The dating of an event before the time it happened; an antedating; -- opposed to metachronism.
Pro'chro·nism noun [ Greek ... preceding in time; ... before + ... time: confer French prochronisme .] The dating of an event before the time it happened; an antedating; -- opposed to metachronism . 
prochronic, prochronism 1. Pertaining to a period before time began. 2. The dating of an event as earlier than its actual occurrence.
a chronological error in which a person, event, etc., is assigned a date earlier than the actual one; prolepsis. Cf.