The sign of Krita Yuga was that the religion thian consisted of the identification of self with Brahma. In the Krita age the four orders had eternal fourfold measure.
आत्मयोगसमायुक्तोधर्मोऽयं कृतलक्षणः। कृते युगे चतुष्पादश्चातुर्वण्यस्य शाश्वतः॥