Prompt
Generate a realistic portrait of Sir Richard Owen, a middle-aged British biologist, comparative anatomist, and paleontologist from the 19th century, dressed in formal attire, with a thoughtful expression, sitting in a library or study with books and scientific instruments in the background, reflecting his contributions to the fields of biology, anatomy, and paleontology, and his notable achievements, including coining the term 'Dinosauria' and founding the Natural History Museum, London.