>>12817917Through geology we have an understanding of how the Earth climate and continents were changing. So we have knowledge of which biomes existed on each part of the world at a particular time.
Then from bones you can track the evolution of features (such as feathers), combined with carbon dating tells you which period these animals lived, turning snapshots into a story.
Groups of fossils, fossilized feces, eggs, struggle signs and so on, tells you what these animals ate, who preyed on them, and how the social relationships looked like.
There's plenty of proof to conclusively know that dinosaurs evolved into birds and how, since plainsrunning was a common trait of these intermediate species.
It's not that hard to grasp, really.
