Parasaurolophus
John Kaprielian
Parasaurolophus Cyrtocristatus
Millard H. Sharp
Parasaurolophus Cyrtocristatus Skull
Millard H. Sharp
Parasaurolophus Dinosaur Crest Fossil
Millard H. Sharp
Parasaurolophus Cyrtocristatus #1
Millard H. Sharp
Parasaurolophus
Robert J. Erwin
Parasaurolo Dinosaur Skull Fossil
Millard H. Sharp
Cretaceous Period, Illustration
Spencer Sutton
Cretaceous Period, Illustration #1
Spencer Sutton