What animals have been extinct for over 100 years?

- Great Auk (Pinguinus impennis) - Extinct since the mid-1800s

- Tasmanian Tiger (Thylacinus cynocephalus) - Extinct since the early 1900s

- Caribbean Monk Seal (Neomonachus tropicalis) - Extinct since the early 1900s

- Baiji (Lipotes vexillifer) - Extinct since the early 2000s