Immemorial
By: Ellis Newell
adj. Going deep into the past before history, knowledge, or memory; primordial.
Sentences
During the dinosaur days, it was considered immemorial, as there was is no memory of it.
The immemorial study was of the ice age, which was ages ago.
Synonyms: archiac, olden
Antonym: Current, Future
Sid the sloth- Ice Age 2 a funny moment