Liopleurodon
- When: Middle to Late Jurassic
(166–155 mya) - Where: Europe
- What: Pliosaur
- Weight: 25–35 metric tons
- Length: 10 meters
- Diet: Carnivorous
- Discovered: 1873
odon, odont, odus
Tooth(ed)
(from the Greek word odon)
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
Placodus
- When: Middle Triassic
(247–235 mya) - Where: Europe
- What: Sauropterygian marine reptile
- Weight: 100–200 kg
- Length: 2 meters
- Diet: Durophagous
- Discovered: 1830
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
Thecodontosaurus
- When: Late Triassic
(205–201 mya) - Where: Europe
- What: Sauropodomorph
- Weight: 10–20 kg
- Length: 2 meters
- Diet: Herbivorous
- Discovered: 1836
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
Mastodonsaurus
- When: Middle Triassic
(247–237 mya) - Where: Europe
- What: Amphibian
- Weight: 1 metric ton
- Length: 6 meters
- Diet: Carnivorous
- Discovered: 1828