cold blooded, and most lived in water so they would have advantages of a water source, plus thier tadpoles can live of organisms in the water. apparently the frogs pretty much diverged right after dinosaurs died out, so they probably lived very simple lives that dint require too much resources or food like dinos did. also they evolved 20 times faster than mammals did.
as mammals were quite small during the jurassic they dint require too much food or resources, and they mightve lived in burrows, and can survive and are omnivirous. while non-avian dinosaurs required too much resources to be able to live through a catastrophe.
some pre-kpg mammal groups also survived, and have mysterious evolutionary history, like BATS, selendons and nosphentes, monotremes and marsupials, plus south america had marsupial-adjacent mammals that survived until somewhat recently. plus plants that survived dint diversify til after thier extinction had advantages, by going dormant either by seeds or the whole plant itself.
cold blooded, and most lived in water so they would have advantages of a water source, plus thier tadpoles can live of organisms in the water. apparently the frogs pretty much diverged right after dinosaurs died out, so they probably lived very simple lives that dint require too much resources or food like dinos did. also they evolved 20 times faster than mammals did.
as mammals were quite small during the jurassic they dint require too much food or resources, and they mightve lived in burrows, and can survive and are omnivirous. while non-avian dinosaurs required too much resources to be able to live through a catastrophe.
some pre-kpg mammal groups also survived, and have mysterious evolutionary history, like BATS, selendons and nosphentes, monotremes and marsupials, plus south america had marsupial-adjacent mammals that survived until somewhat recently. plus plants that survived dint diversify til after thier extinction had advantages, by going dormant either by seeds or the whole plant itself.