![16 Between 130-83 million years ago, all of western Texas was at the bottom of a shallow sea. Many fossils were recovered in the Big Bend area. Mountains rose and...](thumbs/16.webp)
Between 130-83 million years ago, all of western Texas was at the bottom of a shallow sea. Many fossils were recovered in the Big Bend area. Mountains rose and…
![P1090546 Hyracotherium, a tiny mammal that lived 55 million years ago in Big Bend and is the ancestor of all horses. Horses went extinct in North America about 12000...](thumbs/P1090546.webp)
Hyracotherium, a tiny mammal that lived 55 million years ago in Big Bend and is the ancestor of all horses. Horses went extinct in North America about 12000…
![P1090537 Quetzalcoatlus, possibly the largest flying creature to have ever lived. Wingspan: 11m; weight: 230 kg, used legs and wings to walk on land.](thumbs/P1090537.webp)
Quetzalcoatlus, possibly the largest flying creature to have ever lived. Wingspan: 11m; weight: 230 kg, used legs and wings to walk on land.
![P1090538 Quetzalcoatlus, possibly the largest flying creature to have ever lived. Wingspan: 11m; weight: 230 kg, used legs and wings to walk on land.](thumbs/P1090538.webp)
Quetzalcoatlus, possibly the largest flying creature to have ever lived. Wingspan: 11m; weight: 230 kg, used legs and wings to walk on land.