Priyavrata-vaṃśa and Saptadvīpa Vibhāga (प्रियव्रतवंशः सप्तद्वीपविभागश्च)
कृतत्रेतादियुक्तास्तु युगाख्या ह्येकसप्ततिः / ये ऽतीतास्तैर्युगैः सार्धं राजानस्ते तदन्वयाः
kṛtatretādiyuktāstu yugākhyā hyekasaptatiḥ / ye 'tītāstairyugaiḥ sārdhaṃ rājānaste tadanvayāḥ
Seventy-one (71) cycles called yugas—comprising Kṛta, Tretā, and the rest—have passed away; and with those yugas, the kings of that lineage too have gone into the past.