User blog comment:Adsper/All Possible Mobs/@comment-2600:1700:7980:71C0:8819:4C1D:356A:8BA5-20180415190441/@comment-2001:5B0:45C6:8C60:0:FF:FEBF:47C0-20180624165717

Megatherium should be added. It's a classic Cenozoic mammal.