Cindi Sirois Collins is a retired Texas science teacher whose love of geology and Big Bend’s Fossil Discovery Exhibit led her to research the park’s paleontological past and inspired her passion for dinosaurs and other ancient animals. Asher Elbein is a freelance writer whose work has appeared in the New York Times, Texas Monthly, and Audubon magazine, among other publications.

• Introduction Chapter 1. Fossil Hunting in Big Bend Chapter 2. The March of Time in Big Bend Chapter 3. Marine Big Bend: The Boquillas and Pen Formations  Chapter 4. Dinosaur Floodplains: The Aguja, Javelina, and Cretaceous Black Peaks Formations Chapter 5. Rivers and Ash: The Paleogene Black Peaks, Hannold Hill, and the Combined Formations Chapter 6. Cool Forests, Drying Plains: The Delaho, Banta Shut-In, and the “Pleistocene” Formations Acknowledgments Suggestions for Further Reading Bibliography Index

Cindi Sirois Collins is a retired Texas science teacher whose love of geology and Big Bend’s Fossil Discovery Exhibit led her to research the park’s paleontological past and inspired her passion for dinosaurs and other ancient animals. Asher Elbein is a freelance writer whose work has appeared in the New York Times, Texas Monthly, and Audubon magazine, among other publications.

• Introduction Chapter 1. Fossil Hunting in Big Bend Chapter 2. The March of Time in Big Bend Chapter 3. Marine Big Bend: The Boquillas and Pen Formations  Chapter 4. Dinosaur Floodplains: The Aguja, Javelina, and Cretaceous Black Peaks Formations Chapter 5. Rivers and Ash: The Paleogene Black Peaks, Hannold Hill, and the Combined Formations Chapter 6. Cool Forests, Drying Plains: The Delaho, Banta Shut-In, and the “Pleistocene” Formations Acknowledgments Suggestions for Further Reading Bibliography Index

Cindi Sirois Collins is a retired Texas science teacher whose love of geology and Big Bend’s Fossil Discovery Exhibit led her to research the park’s paleontological past and inspired her passion for dinosaurs and other ancient animals. Asher Elbein is a freelance writer whose work has appeared in the New York Times, Texas Monthly, and Audubon magazine, among other publications.

• Introduction Chapter 1. Fossil Hunting in Big Bend Chapter 2. The March of Time in Big Bend Chapter 3. Marine Big Bend: The Boquillas and Pen Formations  Chapter 4. Dinosaur Floodplains: The Aguja, Javelina, and Cretaceous Black Peaks Formations Chapter 5. Rivers and Ash: The Paleogene Black Peaks, Hannold Hill, and the Combined Formations Chapter 6. Cool Forests, Drying Plains: The Delaho, Banta Shut-In, and the “Pleistocene” Formations Acknowledgments Suggestions for Further Reading Bibliography Index