Not the subject, but it's dealing with Earth hence Geologic Time Scale. Watch the videos.
Oh whoops, I meant to say geology, not geography, I always mix those up :/
I'm in a class right now called Earth History, which is mostly geology but has some stuff about evolution and early life in it too. I am also taking a human geography course, but it doesn't interest me as much as geology tbh
Oh. That sucks I found my interest, in geology as a young boy. I would say about five. My dad was surprised how smart I was. This is, due to looking at my older siblings textbooks. Then watching National Geographic a lot and Discovery. Unfortunately, this never went towards a career.
I probably lost interest at the age of fourteen. I started it back up at eighteen. Anyways although inaccurate Jurassic Park, helped fuel my passion for prehistoric interests. I usually think of some dinosaur's having feathers, while large carnivores didn't. The same thing can be said for herbivores. I think mostly omnivores had feathers. Which explains birds although dinosaur's are Non-Avian Dinosaurs. Hence why birds are in the class Aves. Some scientists class birds with reptiles. They share a common ancestor. Birds appeared in the Jurassic period.
If you're interested, you will find out a lot of things. Such as Mammals appeared with Reptiles before the Age of Dinosaurs. So this means either means Mammals split from Reptiles or possibly around before them.