Mandatory Credit: Photo by Historia/Shutterstock (9850929a) Tasmanian Tiger Or Thylacine (thylacinus Cynocephalus) in Captivity at London Zoo. the Species is Believed to Be Extinct. Largest Known Carnivorous Marsupial of Modern Times - Became Extinct in 1936 - Was an Apex Predator. Unattributed Postcard Tasmanian Tiger Or Thylacine