As A. ruthveni was assumed to be a northwestern Amazonian endemic , the Peruvian frog indicates the Allophrynidae might have been more widespread in prehistoric times , only later on disappearing from most of the Amazon Basin .
Are actually a relict group .
As A. ruthveni was assumed to be a northwestern Amazonian endemic , the Peruvian frog indicates the Allophrynidae might have been more widespread in prehistoric times , only later on disappearing from most of the Amazon Basin , and are actually a relict group .