As detailed in the main article, the 'final form' of the Satapatha Brahmana is estimated to have been recorded around 1000-800 BCE, although it refers to astronomical phenomena dated to 2100 BCE, and as quoted above, historical events such as the Sarasvati river drying up, believed to have occurred around 1900 BCE. It provides scientific knowledge of geometry and observational astronomy from the Vedic period, and is considered significant in the development of Vaishnavism as the possible origin of several Puranic legends and avatars of the RigVedic god Vishnu, all of which (Matsya, Kurma, Varaha, Narasimha, and Vamana) are listed in the Dashavatara.