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Mastodon
Mastodon, a large, extinct animal resembling the elephant and mammoth. The mastodon's molars (grinding teeth) had knobby crowns and long, distinct roots.
What makes these breeds so special? Take a fun and expert look. Then find out which breed is best for you.
Mastodon, a large, extinct animal resembling the elephant and mammoth. The mastodon's molars (grinding teeth) had knobby crowns and long, distinct roots.
Mammoth, an extinct animal related to and resembling the elephant. Mammoths were abundant during the Ice Age. See more »
Mastodon, a large, extinct animal resembling the elephant and mammoth. The mastodon's molars (grinding teeth) had knobby crowns and long, distinct roots. See more »
The saber-tooth cat is really an intriguing mixture of carnivores. Although we often refer to this now extinct animal as the saber-toothed tiger, it was really a combination of lion, tiger and bear. Take our quiz and learn about the distinctive features of a saber-tooth cat that made it strikingly similar to so many different animals. See more »
The green glossary explains lazarus species in this article. Learn all about lazarus species. See more »