Bhagavatapurana 3.7.27

3.7.27

teṣāṃ saṃsthāṃ pramāṇaṃ ca bhūr-lokasya ca varṇaya /
tiryaṅ-mānuṣa-devānāṃ sarīsṛpa-patattriṇām /
vada naḥ sarga-saṃvyūhaṃ gārbha-sveda-dvijodbhidām //

26 & 27. O son of Mitra, describe to me their dynasties and the deeds of those that were born of them, what *lokas* (regions) are situated above and below the earth; of their arrangements, their positions, their dimensions as well as those of Bhurloka; please tell us of the creation and classification of beasts, men and gods, reptiles and birds, of those that are born of the womb or sweat, of those that are twice-born, and of the vegetable kingdom.