Baylor College Medical School
Earth Science
Can you please explain why the time periods of Paleozoic and Mesozoic are subdivided into early, middle, and late instead of named epochs, as they are in the Cenozoic?
Can you please explain why the time periods of Paleozoic and Mesozoic are subdivided into early, middle, and late instead of named epochs, as they are in the Cenozoic?
Hey Greta, this sounds good:
http://answers.yahoo.com/question/index?qid=20110202112358AASsOWm