The Vienna Dioscurides is an early 6th-century copy of De Materia Medica, a manuscript first created by the ancient Greek physician and pharmacologist Dioscurides. A precursor to all modern pharmacopeias, it remained in practical use until about 1600. The Vienna Dioscurides contains more than 400 pictures of animals and plants and is the earliest known manuscript to use a solid gold background. It is also the oldest surviving illustrated treatise on what type of animal? Discuss