The animals which evolved into the first amphibian that lived on both land and water, were _____AJawless fishBLobefinCIchthyosaursDShrewAnswer: B. Lobefin Read Explanation: Lobefin were the first animals to be declared as amphibians. The first mammals resembled shrews whereas jawless fish evolved around 350 million years ago. Ichthyosaurs were fish-like reptiles that existed 200 million years ago. Read more in App