Cretaceous-tertiary Kt Extinction Event
Ted Kinsman
Iguanodon Biting Megalosaurus #1
Wellcome Images
Cretaceous Meteorite
Ted Kinsman
Cretaceous Dragonfly Fossil
James L. Amos
Geologic Time Line #1
Spencer Sutton
Sem Of Cretaceous-tertiary Kt Meteorite
Ted Kinsman
Sem Of Cretaceous-tertiary Kt Meteorite #2
Ted Kinsman
Sem Of Cretaceous-tertiary Kt Meteorite #1
Ted Kinsman
Sem Of Cretaceous-tertiary Kt Meteorite #3
Ted Kinsman
Triceratops
David Davis and Photo Researchers
Ammonite Fossil
Francois Gohier and Photo Researchers
Fossilized Foraminiferans Lm #1
Gianni Tortoli
Baculites Fossil #1
Ted Kinsman
Geologic Time Line
Spencer Sutton
Geologic Time Line #3
Spencer Sutton
Kt Boundary And Iridium Layers In Rock
Millard H. Sharp
Cretaceous Period, Illustration #1
Spencer Sutton
Cretaceous Period, Illustration
Spencer Sutton
Cretaceous Period Landscape
Publiphoto
Cretaceous Lizard
James L. Amos
Cretaceous Landscape
Publiphoto
K-t Boundary
Gianni Tortoli
Evolution Of Fishes, Illustration
Gwen Shockey
Ichthyosaurus And Plesiosaurus
Wellcome Images
Feathered Caudipteryx Fossil
Martin Shields
Hesperornis Regalis
Science Source
Ichthyosaurus And Plesiosaurus
Science Source
Jurassic Plesiosaurus And Ichthyosaurus
British Library
Triceratops #1
Millard H. Sharp
Pachycephalosaurus Dinosaur Skull, Sub
Millard H. Sharp
Daspletosaurus Horneri Dinosaur Skull
Millard H. Sharp
Oviraptor And Nest #2
Spencer Sutton
Prehistoric, Early Cretaceous Landscape
Science Source
Pteranodon, Cretaceous Flying Reptile
Science Source
Claosaurus, Cretaceous Dinosaur
Science Source
Protoceratops Eggs Cretaceous Dinosaur
Science Source
Hylaeosaurus, Cretaceous Dinosaur
Science Source
Pterodactyl, Cretaceous Dinosaur #2
Spencer Sutton
Underwater Landscape Of Cretaceous
Publiphoto
Pterodactyl, Cretaceous Dinosaur
Spencer Sutton
Evolution Of Fishes, Illustration #2
Gwen Shockey
Tyrannosaurus Rex #1
Millard H. Sharp
Dinosaurs Fighting
Science Source
Utahraptor Foot Fossil
Francois Gohier
Velociraptor Skull
Barbara Strnadova
Tyrannosaurus Rex
Science Source
Tyrannosaurus
David Davis and Photo Researchers
Pteranodon Longiceps
Science Source
Plesiosauria Skeleton, Mesozoic Reptile
Science Source
Hesperornis Regalis, Flightless Bird
Biodiversity Heritage Library
Fossilized Ammonites
Scott Camazine
Triceratops Juvenile
Millard H. Sharp
Tylosaurus and Elasmosaurus
Tom McHugh and Photo Researchers
Iguanodon Mesozoic Dinosaur
Science Source
Iguanodon, Mesozoic Dinosaur #6
Science Source
Iguanodon, Mesozoic Dinosaur #2
Science Source
Plesiosaurus
Science Source
Hesperornis
Science Source
Tyrannosaurus Rex #3
Millard H. Sharp
Fossil Stingray
James L. Amos
Ammonite Fossils #1
James L. Amos
Iguanodon Skeleton Mesozoic Dinosaur
Science Source
Kosmoceras #1
Gwen Shockey
Triceratops Dinosaur
Millard H. Sharp
Tyrannosaurus Rex #8
Millard H. Sharp
Tyrannosaurus Rex Skeleton #3
Millard H. Sharp
Dinosaur Skeleton
Phil DEGGINGER