Mastodon
- When: Miocene to Pleistocene
(11 million–12,000 years ago) - Where: North America
- What: Mammal
- Weight: 5 metric tons
- Length: 3 meters
- Diet: Herbivorous
- Discovered: 1799
Pleistocene
Saber-toothed Cat (Smilodon)
- When: Pleistocene
(2.5 million to 10,000 years ago) - Where: North and South America
- What: Mammal
- Weight: 160–280 kg
- Length: 1.6–2.2 meters
- Diet: Carnivorous
- Discovered: 1842
Woolly Mammoth
- When: Pleistocene
(400,000–4,000 years ago) - Where: North America, Europe, Asia
- What: Mammal
- Weight: 6–8 metric tons
- Length: 4 meters
- Diet: Herbivorous
- Discovered: 1799
Woolly Rhinoceros
- When: Pleistocene
(3.6 million to 10,000 years ago) - Where: Asia
- What: Mammal
- Weight: 1,800–2,700 kg
- Length: 3.5 meters
- Diet: Herbivorous
- Discovered: 18th century
Gigantopithecus
- When: Miocene to Pleistocene
(9 million–100,000 years ago) - Where: Asia
- What: Mammal
- Weight: 500 kg
- Length: 3 meters
- Diet: Herbivorous
- Discovered: 1935
Glyptodon
- When: Pleistocene
(2 million–10,000 years ago) - Where: South America
- What: Mammal
- Weight: 1–2 metric tons
- Length: 3 meters
- Diet: Herbivorous
- Discovered: 1839
Megaloceros
- When: Pleistocene
(400,000–8,000 years ago) - Where: Europe, Asia
- What: Mammal
- Weight: 700 kg
- Length: 3.5 meters
- Diet: Herbivorous
- Discovered: 1799
Megatherium
- When: Pleistocene
(2 million–10,000 years ago) - Where: South America
- What: Mammal
- Weight: 4 metric tons
- Length: 6 meters
- Diet: Herbivorous
- Discovered: 1796
Titanis
- When: Pliocene to Pleistocene
(5–2 mya) - Where: North America
- What: Bird
- Weight: 150 kg
- Length: 2.5 meters
- Diet: Carnivorous
- Discovered: 1963