Million of years ago there lived dinosaurs up to 36 m high. About 10,000 years ago lived Machairodontinae -compared to cats today they were huge. About 400,000 years ago lived Mammuthus trogontherii: it reached over 4 m at the shoulder. And these are just some examples.
Todays biggest living creatures look small compared to previous. So my question is, why are all creatures getting smaller? Why doesn't evolution generate any big creatures with size comparable to the dinosaurs?
No comments:
Post a Comment