 | Aristotle's Ladder, Darwin's Tree: The Evolution of Visual Metaphors for Biological Order J. David Archibald is professor emeritus of biology at San Diego State University as well as curator of mammals in the SDSU Vertebrate Collections. He has written or coedited more than 150 articles and 6 books, including The Rise of Placental Mammals: Origins and Relationships of the Major Extant Clades and Extinction and Radiation: How the Fall of Dinosaurs Led to the Rise of Mammals . |
