Shiva Purana

siva.sh/siva-purana/saturda-samhita/4/3

मर्नोर्वैवस्वतस्यैव ते प्रपुत्रो भविष्यति।। तदा चतुर्युगाश्चैव तस्मिन्मन्वन्तरे विधे ।।३।।

sanskrit

Marno will be your son by Vaivasvata himself Then the four ages were also in that manvantara in the prescribed manner.

english translation

marnorvaivasvatasyaiva te praputro bhaviSyati|| tadA caturyugAzcaiva tasminmanvantare vidhe ||3||

hk transliteration by Sanscript