Maybe I am beating a dead horse (or rhino), but other problems in Davison’s claims relate to his curious neglect of the K-T asteroid impact. Not only does it explain the extinction of dinosaurs and many other creatures which he implies cannot be explained except their being doomed genetically (despite having thrived and diversified for millions of years), it also refutes his claim that there is no logical explanation (other than hopeful monsters) to explain the rapid diversification of mammals in the Cenozoic. With the sudden demise of thousands of species of dinosaurs, pterosaurs, sea-going reptiles at the K-T event, many new and large niches were opened up for mammals to exploit. One has to wonder how he could be unaware of these widely discussed aspects of Earth history, or ignore them if he was aware of them.