There are numerous synchronisms recorded in the Vedic, Puranic and epic literatures which are in consonance with the arrangement of names in the dyna… - Purushottam L. Bhargava

If the Puranic genealogies from the time of the Buddha onward are almost faultless, the presumption naturally is that the earlier genealogies too are not mere figments of the imagination. (…) In the first place a large number of these names occur in the Vedic literature which is quite independent of the Purāṇas. Secondly, even those names which do not occur in the Vedic literature are so archaic that they could not have been coined by the authors of the present Purāṇas in whose time the style of names had completely changed.

Fortunately the Puranic genealogies from the time of the founder of Buddhism onward can be tested by the evidence supplied by the Buddhist and Jain literature, dramas and inscriptions. (…) the mistakes regarding the names, the order of succession and the regnal years of kings are certainly not many.

The fact that Indra is said to have given the possessions of the Anu king to the Tṛtsus in the battle of Paruṣṇī shows that the Anus dwelt on the banks of the Paruṣṇī.