Albrecht Dürer's Rhinoceros
This woodcut was on a recent cover of JAMA. Durer is (as you know) THE most famous woodcut artist of all times. Interesting he never saw a rhino. So the armor plates are not real nor is the "Durer horn" on the back. A rhino did make it to Lisbon in 1515 not seen in Europe since Roman times. It is believable that people supposed that this was a unicorn(the possible sire of the methicorn).
Even though Durer's inaccuracies were obvious his woodcut remained in natural history texts for 200 years.