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Pterosaurs

Pteranodon

Say it: teh-RAN-oh-don  Β·  Name means: β€œToothless wing”

⚠️ Not a dinosaur: Pteranodon was a pterosaur, a flying reptile. Pterosaurs were close cousins of dinosaurs, but their legs did not sit straight under the body in the dinosaur way and they evolved on a separate branch β€” so they are not dinosaurs and not the ancestors of birds.

Scientific life reconstruction of Pteranodon: Pteranodon
Key facts about Pteranodon
⏳ Lived86–84 million years ago
Late Cretaceous
🐟 DietPiscivore (fish-eater)
πŸ“ Wingspan5–7 m (16–23 ft)
↕️ Height1.5–1.8 m (5–6 ft)
βš–οΈ Weight20–50 kg (40–110 lb)
πŸ“ Found inNorth America
πŸ”Ž Discovered1870 by Othniel Charles Marsh (named in 1876)

About Pteranodon

Pteranodon was a giant flying reptile with wings wider than a car is long and a big pointy crest on its head. It was not a dinosaur!

Pteranodon was a large pterosaur that soared over the Western Interior Seaway of North America, with a wingspan of about 5–7 m in big males. Over a thousand specimens show clear differences between large-crested males and smaller, small-crested females.

How big was it?

Pteranodon: ~6.0 m wingspanPerson 1.7 m Β· School bus 12 m
Compare with other dinosaurs β†’

Drawn to scale next to a 1.7 m adult and a 12 m school bus (pterosaur size is wingspan).

Did you know?

  1. Pteranodon's wings stretched wider than a big car is long!
  2. Its name means 'toothless wing' because it had no teeth at all.
  3. Its wings were made of skin stretched from one super-long finger to its legs.
  4. Pteranodon is often called a 'pterodactyl', but that's really the name of a different, smaller pterosaur.
  1. Adults fall into two size classes: larger individuals with big crests and narrow hips, and smaller ones with tiny crests and wider hips, interpreted as males and females β€” evidence that crests were display structures.
  2. Its wingspan figures here (about 5–7 m) are wingspans, not body length; the body itself was small and lightweight, with hollow, air-filled bones.
  3. Studies of pterosaur limbs suggest Pteranodon launched into the air using all four limbs in a powerful vault, with the arms doing most of the work.
  4. A Pteranodon neck bone with a Cretoxyrhina shark tooth stuck in it shows these sharks bit pterosaurs, either as live prey or carcasses floating at sea.
DinoVerse Β· Pteranodon fact sheet
Pterosaurs

🐟 What did it eat?

Food: fish, squid-like cephalopods.

Soared over the sea and snatched fish from near the surface with its long, toothless beak, possibly diving or sitting on the water to fish, and swallowed prey whole.

Clues scientists use: fish bones and scales found with a skeleton; long, toothless beak like fish-eating birds; fossils found in sea rocks far from shore.

Who might have hunted it: Cretoxyrhina (ginsu shark), Tylosaurus.

πŸ—ΊοΈ Where fossils were found

  • Smoky Hill Chalk, Niobrara Formation, western Kansas, USA (North America)
  • Pierre Shale, South Dakota, USA (North America)
  • Wyoming, USA (North America)
Skeleton / museum mount of Pteranodon: Mounted composite cast of Pteranodon longiceps (=P. ingens) at the American Museum of Natural History, New York. Photo credit Matt Martyniuk henteeth.com
Skeleton / museum mount of Pteranodon: Mounted composite cast of Pteranodon longiceps (=P. ingens) at the…

Myth or fact?

βœ— Myth: Pteranodon was a flying dinosaur.

βœ“ Fact: Pteranodon was a pterosaur, a flying reptile on a separate branch from dinosaurs.

βœ— Myth: Pterosaurs like Pteranodon were the ancestors of birds.

βœ“ Fact: Birds evolved from small feathered theropod dinosaurs; pterosaurs died out 66 million years ago and left no descendants.

✏️ Quick quiz

Circle the right answer. Name: ______________________

  1. Is Pteranodon a dinosaur?

    • A Yes, a flying dinosaur
    • B No, it was a pterosaur (a flying reptile)
    • C Yes, an early bird
    • D No, it was a bat
  2. What does 'Pteranodon' mean?

    • A Toothless wing
    • B Winged lizard
    • C Feathered serpent
    • D Beak snout
  3. What did Pteranodon mostly eat?

    • A Leaves
    • B Rocks
    • C Fish
    • D Dinosaur eggs

Answers: 1–B 2–A 3–C

Sources and picture credits