Q: What is significant about the smallest vertebrate?

Flexi Says: Paedophryne amanuensis is the smallest vertebrate, discovered in a village in Papua New Guinea. Adults are just 7.0 to 8.0 millimeters. This discovery gives a new story about the evolution of amphibians that small frogs have evolved independently 11 times around the world, and almost exclusively in tropical rain forests, where the amphibians' skins won't dry out and food is plentiful. As the study says, minute frogs are not mere oddities but represent a previously unrecognized ecological guild.