Horrible but True
Natural World
Dangerous Waters
Hunters and Hunted
Weird Plants
Prehistoric Life
Natural Disasters
History
Exploration
Unusual Events
Toothy
S
ome of the duck-billed dinosaurs had as many as 2,000 teeth in their beak-shaped jaws.
The skull of a duck-billed dinosaur
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Book:
Horrible but True
Section:
Natural World
Chapter:
Prehistoric Life