Dinosaur time gap

Did Parasaurolophus and Dimetrodon live at the same time?

No. Parasaurolophus (Late Cretaceous) and Dimetrodon (Cisuralian) are separated by 191 million years.

Parasaurolophus to you: 72 million years.

More time separated them than separates Parasaurolophus from you.

Parasaurolophus

Late Cretaceous · 84–72 million years ago

Named by Parks, 1922

Fossils from United States, Canada

Silhouette by Richard Rich

Dimetrodon

Cisuralian · 283–274 million years ago

Named by Cope, 1878

Fossils from United States, Canada, Germany

Dimetrodon is not a dinosaur.

Silhouette by Will Toosey

Dig from Dimetrodon down to Parasaurolophus →

Between Dimetrodon and Parasaurolophus

  • Helicoprion Guadalupian · 274–267 million years ago
  • Anchisaurus Early Jurassic · 201–193 million years ago
  • Scelidosaurus Early Jurassic · 200–193 million years ago
  • Shunosaurus Middle Jurassic · 168–162 million years ago
  • Diplodocus Late Jurassic · 155–143 million years ago
  • Archaeopteryx Late Jurassic · 149–145 million years ago
  • Baryonyx Early Cretaceous · 126–121 million years ago
  • Ouranosaurus Early Cretaceous · 113–101 million years ago

Fun Facts

  • Parasaurolophus spans 11 million years of rock.
  • Daspletosaurus and Parasaurolophus could have met.
  • Dimetrodon is known from 94 fossil sites.
  • Dimetrodon is not a dinosaur. It was gone 37 million years before the oldest dinosaur here.

Did they live at the same time?

Every animal you can pick →