QUOTE: In the wake of current DC series — including Doomsday Clock, Justice League and Superman — bringing back concepts that touch upon the past and future of DC’s mythology, DiDio said that the company was “reintroducing aspects of our history back into [our central universe], from the Justice Society all the way into the future of the Legion of Superheroes.” The audience was then briefly shown a detailed timeline — too detailed to be legible onscreen — of the entire DC continuity, split into four distinct eras: “Dawn of the Heroic Age,” which DiDio explained begins with the arrival of Wonder Woman in Man’s World, before the Second World War; “The Space Age,” which begins with Superman’s debut; “The Age of Crisis,” which spans the period between the 1985 Crisis on Infinite Earths comic book series and 2011’s Flashpoint; and “The Flashpoint,” which was characterized as the current era of DC’s output.

After reading a couple of issues of the current event with "the Batman who laughs", I would add another era: "The Age of Jumping the Shark"