Thylacinus potens ( `` powerful thylacine '' ) was one of the largest species from the family Thylacinidae , growing up to the size of a wolf . Thylacinus potens ( `` powerful thylacine '' ) was the largest species of the family Thylacinidae , known from a single poorly preserved fossil discovered by Michael O. Woodburne in 1967 in a Late Miocene locality near Alice Springs , Northern Territory .