[2] The locality is part of the Chinle Formation in the Petrified Forest Member, and dates to the middle Norian ~212 Ma, possibly representing one of the youngest known rauisuchids.

Vivaron was noted to share a number of characteristics with Teratosaurus, to which it is believed to be closely related to, particularly features of the maxilla and antorbital fossa.

Vivaron demonstrates the need for more detailed morphological analysis of all rauisuchid remains in the southwestern United States when determining their assignment within the group, and not refer them to a taxon based only on geographic distribution.

During the late Carnian to early Norian, very similar faunal associations were present across Pangaea, all of which included rauisuchid taxa.

The close relationship between Vivaron and Teratosaurus demonstrates that despite being widely geographically separated and belonging to distinct faunal assemblages, there was a clear biogeographic link between the Chinle Formation and high-latitude Pangaea, and that rauisuchids were able to maintain a widespread distribution into the middle Norian.