DgarThe dinosaurs did not "Rule the Earth".
They were just alive.
Stop giving them credit for administrative skills they likely did not have.
Svavar the NeurospicyIt could be said that humans don't rule the Earth either.
We don't have a single global government or anything more than regional alliances of convenience based on arbitrary borders and selective historical precedence.
We just exist and consume resources without regard for any overall sense of global wellbeing.