Megalosaurus
- When: Middle Jurassic
(166–160 mya) - Where: Europe
- What: Theropod
- Weight: 1–2 tons
- Length: 9–10 meters
- Diet: Carnivorous
- Discovered: 1824
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
Microraptor
- When: Early Cretaceous
(125–120 mya) - Where: Asia
- What: Dromaeosaurid theropod
- Weight: 1 kg
- Length: 0.7–1 meter
- Diet: Carnivorous
- Discovered: 2000
Minmi
- When: Early Cretaceous
(133–120 mya) - Where: Australia
- What: Ankylosaur
- Weight: 300–500 kg
- Length: 3–4 meters
- Diet: Herbivorous
- Discovered: 1980
Mosasaurus
- When: Late Cretaceous
(82–66 mya) - Where: Worldwide
- What: Mosasaur squamate
- Weight: 15 metric tons
- Length: 12–17 meters
- Diet: Carnivorous
- Discovered: 1822
Muttaburrasaurus
- When: Early Cretaceous
(112–102 mya) - Where: Australia
- What: Iguanodontid Ornithopod
- Weight: 1.5–2.8 metric tons
- Length: 7–9 meters
- Diet: Herbivorous
- Discovered: 1981
Nigersaurus
- When: Early Cretaceous
(115–105 mya) - Where: Africa
- What: Sauropod
- Weight: 4 metric tons
- Length: 9 meters
- Diet: Herbivorous
- Discovered: 1999