why were ancient humans small, when almost everything (animals, dinosaur, plants, insects) that existed that time were massive?

Question

Edit: it’s been answered, it did slipped my mind that dinosaurs were long gone before humans.. I thought I was up to something, Thank you all!

In: Other

Answer 1

Not everything was massive. There were still insects and small living organisms. It’s I think to do with evolution, the dinosaurs ancestors came out of the water before our ancestors, thus allowing them to develop on land before us.