Unpublished figures, macerated spur, ear bone and ear cartilege of platypus anatinus by Richard Griffin Three full-colour watercolour illustrations showing the spur [calcar] after maceration (figure 1), theear bone (figure 2) and the ear bone (figure 3) of the male platypus specimen as observed by Griffin during dissection. The page is labelled 'Plate 4'. Subject: Zoology / Physiology / Anatomy 1831