Dinosaur time gap

Did Apatosaurus and Smilodon live at the same time?

No. Apatosaurus (Late Jurassic) and Smilodon (Pleistocene) are separated by 143 million years.

Smilodon to you: 0.0117 million years.

More time separated them than separates Smilodon from you.

Apatosaurus

Late Jurassic · 155–143 million years ago

Named by Marsh, 1877

Fossils from United States

Silhouette by Elihu Guzmán Arroyo

Smilodon

Pleistocene · 0.129 million years ago until about 11,700 years ago

Named by Lund, 1841

Fossils from United States, Argentina, Brazil, 11 more

Smilodon is not a dinosaur.

Silhouette by Ivan Iofrida

Dig from Apatosaurus down to Smilodon →

Between Apatosaurus and Smilodon

  • Barilium Early Cretaceous · 137–133 million years ago
  • Deinonychus Early Cretaceous · 113–101 million years ago
  • Pteranodon Late Cretaceous · 86–84 million years ago
  • Chirostenotes Late Cretaceous · 84–72 million years ago
  • Lambeosaurus Late Cretaceous · 84–72 million years ago
  • Stenonychosaurus Late Cretaceous · 84–72 million years ago
  • Dryptosaurus Late Cretaceous · 72–66 million years ago
  • Prenocephale Late Cretaceous · 72–66 million years ago

Fun Facts

  • Smilodon spans 0.1 million years of rock.
  • Smilodon is known from 130 fossil sites.
  • Every Apatosaurus fossil here comes from the United States.
  • Smilodon is not a dinosaur.
  • Apatosaurus and Diplodocus could have met.

Did they live at the same time?

Every animal you can pick →