This is my first post and we’re under construction. If you want to talk extinctions e-mail me: elin@Quaternary.net
The Second Order Predation Hypothesis is that humans killed carnivores and that “unstuck” the control of herbivore populations. Herbivores boomed, ate everything in sight – literally eating themselves to death. In this newly competitive world of scarcity, only the most efficient animals survived – smaller animals and ruminants.
This is a link to a mystery story that details the evidence and explains Second Order Predation easily.
Ice Age Extinctions: Skylark Holmes and Dr. Janet Watson Investigate; “The Case of the Arboricidal Megaherbivores”