is the common name for a group of animals in the order of the tailless amphibians
Approximately that many frog species have disappeared since 1970
At the end of the Devonian period of the Paleozoic Era, the first amphibians appeared on Earth; frogs survived three mass extinctions, including the one that wiped out the dinosaurs
Of the approximately 6,000 amphibian species, 12 percent of bird species and 23 percent of mammal species are endangered compared with 12 percent of bird species and 23 percent of mammal species
Solving the amphibian extinction crisis represents the greatest problem of species conservation in human history