👉 Amphicercids are a group of extinct mammals that lived during the Triassic period, from around 245 million years ago until about 186 million years ago. They were characterized by their large size and long necks, which allowed them to climb trees and forage on mosses and lichens. The most well-known example is the "Amphicercid" species, also known as the "Ceratotherium," which was found in the