HardMaiasaura
Maiasaura peeblesorum
MY-ah-SORE-ah· “good mother lizard”
🕰️ Cretaceous🌿 herbivore🦴 Hadrosauridae
9 m
Length
2.5 m
Height
2.5 t
Weight
A duck-billed dinosaur whose nesting grounds revealed that it cared for its babies. Whole colonies nested together, tending eggs and feeding hatchlings in the nest.
When
Late Cretaceous, ~76 million years ago
Found in
United States
Discovered
Jack Horner, 1979
Did you know?
- Its name means 'good mother lizard' — the first clear proof dinosaurs cared for their young.
- Fossil nesting colonies were found with eggs, babies and adults together.
- It is the official state fossil of Montana, USA.
Artwork: TotalDino, Wikimedia Commons, CC BY 4.0.