Duck-billed Dinosaur
Roger Hall
Duck Bill Dinosaur Skull Fossil
Millard H. Sharp
Claosaurus, Cretaceous Dinosaur
Science Source
Dinosaurs #1
Christian Jegou
Hadrosaur Dinosaur Skull Fossil
Millard H. Sharp
Hadrosaur Dinosaur Skull
Millard H. Sharp
Edmontosaurus Baby Skeleton Fossil
Millard H. Sharp
Edmontosaurus
Millard H. Sharp
Edmontosaurus Skull
Millard H. Sharp
Hadrosaur Eggs In Nest
Millard H. Sharp
Hadrosaur Eggs In Nest #1
Millard H. Sharp
Model Of Maiasaur Eggs Hatching
Jeanne White
Edmontosaurus Fossil #2
Millard H. Sharp
Edmontosaurus Fossil
Millard H. Sharp
Parasaurolophus
John Kaprielian
Edmontosaurus Annectens
Millard H. Sharp
Edmontosaurus Fossil #1
Millard H. Sharp
Edmontosaurus Skull Fossil
Millard H. Sharp
Edmontosaurus Fossil #3
Millard H. Sharp
Parasaurolophus
Robert J. Erwin
Hadrosaur Skull
Millard H. Sharp
Maiasaur Skeleton
John Kaprielian
Dinosaurs of North America
Roger Hall