Marsupials
Thylacine
Broad-faced Potoroo
Lesser Bilby

Broad-faced Potoroo (1875, Australia)
Eastern liebre Wallaby (1890, Australia)
Lake Mackay Hare-wallaby (1932, Australia)[1]
Desert Rat-kangaroo (1935, Australia)
Thylacine (1936, Tasmania, Australia)
Toolache Wallaby (1943, Australia)
Desert Bandicoot (1943, Australia)
Lesser Bilby (1950s, Australia)
Pig-footed bandicoot (1950s, Australia)
Crescent Nailtail Wallaby (1956, Australia)
Red-bellied Gracile Opossum (1962, Argentina)

Sirenians

Steller's Sea Cow (1768), Commander Islands

Rodents
Bulldog Rat

Oriente Cave rata (?, Cuba)[2]
Torre's Cave Rat...