Alphadon (meaning "first tooth") was a genus of small, primitive mammal that was a member of the metatherians, a group of mammals that includes modern-day marsupials. Its fossils were first discovered and named by George Gaylord Simpson in 1929.[2]
In 1862 Arthur Denison and his son William Denison end up shipwrecked following a storm that washed them up on a mysterious island where Dinosaurs and Humans coexist with each other along with prehistoric animals and both father and son try and learn to adjust to their new environment as well going on several adventures
