New fossils recovered from Eocene-era sediments in the Tasmanian Highlands have revealed a previously unknown species of giant, bear-like marsupial. Named Arctotherium tasmani, this 'forest guardian' occupied a specialized ecological niche in the cool, high-altitude rainforests that covered the region forty-five million years ago.
The skeleton's robust limb structure suggests a creature capable of powerful climbing, while the dental analysis indicates a specialized herbivorous diet of ancient conifers and ferns. This discovery provides critical insights into the early diversification of Australian megafauna and how ancient climate shifts shaped the evolution of island-bound species.