Master RGB File:
Thirty million years after sauropod dinosaurs had become extinct in what is now North America, the sauropod Alamosaurus reappeared there. Paleontologists believe their ancestors may have migrated from South America across a new land bridge that joined the two continents.
Name: Alamosaurus ("Alamo lizard")
All images are protected by copyright. Permission to reproduce any image must be obtained by writing to: email@example.com. Please see our Image Use page for more information.