Dinosaur Discoveries in North America

Recent Discoveries in the United States

Where was the world’s oldest and most primitive duck-billed dinosaur found?

The world’s oldest and most primitive duck-billed dinosaur, Protohadros byrdi, was discovered in a road cut near Flower Mound in northcentral Texas. When this dinosaur died almost 95.5 million years ago, the middle of North America had a shallow seaway, and northern Texas was a wooded marsh. Scientists are currently trying to determine if this means that the birthplace of hadrosaurs was North America instead of Asia, as previously thought.


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