This article records tradition as it has been passed down and reported. Its sources are not yet part of the atlas's verified catalogue.
Luis Gonzalez-Reimann's study of the Mahabharata and the yugas traces how the epic itself develops the four age Hindu scheme, Krita, Treta, Dvapara and Kali, each shorter and more morally diminished than the one before it, showing the scheme was elaborated and refined within the text's own long documented composition rather than arriving fully formed.
That documented development matters for an age entry because it means a tradition's own cosmic age scheme can itself have a real textual history, earlier and later strata of the same epic describing the yugas somewhat differently, and an entry records that internal variation rather than presenting a single, harmonized version as though the tradition had always stated it identically.
An age entry on a yuga therefore records its stated place in the four age cycle, its relative length and moral character as the tradition describes them, and, where scholarship has traced it, how the account itself developed across the tradition's own textual history, since Gonzalez-Reimann's own account treats that textual history as inseparable from the yuga scheme itself. The present age, Kali Yuga, is described by the same documented standard as the three that preceded it.