Alamosaurus was named after a trading post in New Mexico where its fossil was first found. The trading post had a big cottonwood growing next to it, and had the Ojo Alamo, from the Spanish word alamo meaning cottonwood tree. This dinosaur had peg-shaped teeth that were not good for chewing. Instead, plant food was swallowed whole and later broken down in the stomach.
Length: 70 feet
Weight: 30 tons
Time: 75-65 million years ago
Where Found: Big Bend region of Texas, New Mexico, Utah, Montana
Think About It: Alamosaurus is as long as two full-size school busses put end to end!