Thylacine The History, Ecology and Loss of the Tasmanian TigerThylacine: The History, Ecology and Loss of the Tasmanian Tiger is a comprehensive exploration of this unique animal. Until the mid 20th century, the thylacine was the worlds largest carnivorous marsupial, and its disappearance has left many questions and contradictions. Alternately portrayed as both a scourge and high value commodity, the thylacines ecology and behaviour were known only anecdotally. In recent years, its taxonomic position, ecology,