7 Giant Animals That Are Now Extinct Part 1

1. Patagotitan Mayorum

The Largest Dinosaur Ever Found

Patagotitan Mayorum is considered the largest land animal ever discovered.

Key facts:

• Estimated length: 100–120 feet
• Weight: up to 70–100 tons (estimates vary)
• Herbivore with a long neck
• Lived around 100 million years ago

It belonged to the sauropod group—giant plant-eating dinosaurs. Surprisingly, it became extinct before the famous dinosaur-killing asteroid, for reasons still unknown.