) had just one continent referred to as Pangaea surrounded by the Panthalassa ocean, and as such the inlands were being incredibly dry and arid. Amphibians progressed from fish all over 360 million several years ago. They were the main vertebrates to continue to exist land. Amphibians have moist skin, https://brooksllhea.blogoscience.com/40899429/5-simple-techniques-for-animal