Posted on August 30, 2019August 30, 2019 by geosciencejournal12 periods on the geologic time scale Geologic time is divided into four large segments called Eons: Hadean, Archean, Proterozoic, and Phanerozoic. The Phanerozoic Eon is divided into Eras: Paleozoic, Mesozoic, and Cenozoic. For more: http://sciaeon.org/geology-and-geoscience/home For Manuscript submission: http://www.sciaeon.org/submit-paper Share this: Share on X (Opens in new window) X Share on Facebook (Opens in new window) Facebook Like Loading... Related