Tyrannosaurus
- When: Late Cretaceous
(68–66 mya) - Where: North America
- What: Theropod
- Weight: 9–14 tons
- Length: 12–13 meters
- Diet: Carnivorous
- Discovered: 1905
saur, sauro or saurus
Lizard
(from the Greek word sauros)
Ankylosaurus
- When: Late Cretaceous
(68–66 mya) - Where: North America
- What: Ankylosaur
- Weight: 6–8 tons
- Length: 6–8 meters
- Diet: Herbivorous
- Discovered: 1908
Brachiosaurus
- When: Late Jurassic
(154–150 mya) - Where: North America
- What: Sauropod
- Weight: 28–58 tons
- Length: 20–25 meters
- Diet: Herbivorous
- Discovered: 1903
Spinosaurus
- When: Early to Late Cretaceous
(112–93 mya) - Where: Africa
- What: Theropod
- Weight: 7–20 tons
- Length: 15–18 meters
- Diet: Carnivorous
- Discovered: 1912
Stegosaurus
- When: Late Jurassic
(155–150 mya) - Where: North America
- What: Stegosaur
- Weight: 4.5–7 tons
- Length: 7–9 meters
- Diet: Herbivorous
- Discovered: 1877
Allosaurus
- When: Late Jurassic
(155–145 mya) - Where: North America
- What: Theropod
- Weight: 2–4 tons
- Length: 8–12 meters
- Diet: Carnivorous
- Discovered: 1877
Argentinosaurus
- When: Late Cretaceous
(93–89 mya) - Where: South America
- What: Sauropod
- Weight: 70–100 tons
- Length: 30–35 meters
- Diet: Herbivorous
- Discovered: 1993
Ichthyosaurus
- When: Early Jurassic
(199–190 mya) - Where: Europe
- What: Ichthyosaur
- Weight: 180 kg
- Length: 2–3 meters
- Diet: Piscivorous
- Discovered: 1825
Plesiosaurus
- When: Early Jurassic
(199–175 mya) - Where: Europe
- What: Plesiosaur
- Weight: 450 kg
- Length: 3.5 meters
- Diet: Piscivorous
- Discovered: 1821