Woolly Mammoth Found In Siberia, 1903
Science Source
Cryptobranchus, Living Fossil
Science Source
Giant Moa Dinornis Ingens, Cenozoic Bird
Biodiversity Heritage Library
Geologic Time Line #1
Spencer Sutton
Mastodon, Cenozoic Mammal #2
Science Source
Mastodon, Cenozoic Mammal
Science Source
Rhinoceros, Extant Cenozoic Mammal
Science Source
Geologic Time Line #3
Spencer Sutton
Richard Owen, English Paleontologist #13
Science Source
Fossil Soft-shelled Turtle
John Cancalosi/Okapia
Geologic Time Line
Spencer Sutton
Fossil Fish Mioplosus Labracoides
Jeffrey Lepore
Fossil Fish Knightia And Diplomystus
Jeffrey Lepore
Fossil Maple Leaf With Knightia Fish
Jeffrey Lepore
Fossil Poplar Leaf
Theodore Clutter
Fossil Heather Flowers
Theodore Clutter
Fossil Sweetgum Leaf
Theodore Clutter
John Day River
Brenda Tharp
Megatherium, Cenozoic Mammal #7
Science Source
Cenozoic Period Landscape
Publiphoto
Cenozoic Era Landscape
Publiphoto
Pliocene Epoch, Marine Fossils
Science Source
Priscacara Fossil, Eocene Sunfish
Science Source
Fossil Mud Lobster
A.b. Joyce
Fossil Flower
Barbara Strnadova
Fossil Turtle
John Cancalosi/Okapia
Evolution Of Fishes, Illustration
Gwen Shockey
Dinornis, Giant Moa, Cenozoic Bird #1
Science Source
Megatherium, Cenozoic Mammal #6
Science Source
Mammoth, Cenozoic Mammal
Biodiversity Heritage Library
Egg Of Dinornis, Giant Moa, Cenozoic
Biodiversity Heritage Library
Mammoth, Cenozoic Mammal #1
Biodiversity Heritage Library
Megatherium, Cenozoic Mammal #5
Science Source
Megatherium, Cenozoic Mammal #3
Science Source
Megatherium, Cenozoic Mammal #4
Science Source
Hipparion Cenozoic Mammal #2
Science Source
Sivatherium, Cenozoic Mammal
Science Source
Uintatherium, Aka Dinoceras, Cenozoic
Science Source
Gastornis, Cenozoic Bird
Science Source
Cacops, Cenozoic Amphibian
Science Source
Hyracotherium, Cenozoic Mammal
Science Source
Megalonyx, Cenozoic Mammal
Science Source
Oxydactylus, Cenozoic Mammal
Science Source
Toxodon, Cenozoic Mammal
Science Source
Tinoceras, Cenozoic Mammal
Science Source
Brontops, Cenozoic Mammal
Science Source
Woolly Mammoth, Cenozoic Mammal
Science Source
Diprotodon, Cenozoic Mammal
Science Source
Megatherium, Cenozoic Mammal
Science Source
Mastodon, Cenozoic Mammal #1
Science Source
Megatherium, Cenozoic Mammal #1
Science Source
Amphibamus, Cenozoic Amphibian
Science Source
Pareiasaurus, Cenozoic Reptile
Science Source
Missourium, American Mastodon, Cenozoic
Science Source
Palaeotherium, Cenozoic Mammal #1
Science Source
Elephas, Extant Cenozoic Mammal
Science Source
Glyptodon, Cenozoic Mammal #1
Science Source
Mylodon, Cenozoic Mammal
Science Source
Primitive Mammals From The Cenozoic
Publiphoto
Glyptodon, Cenozoic Mammal
Science Source
Hipparion, Cenozoic Mammal
Science Source
Woolly Rhino, Cenozoic Mammal
Science Source
Palaeotherium, Cenozoic Mammal
Science Source
Mastodon, Cenozoic Mammal #3
Science Source
Dinornis, Giant Moa, Cenozoic Bird
Science Source
Mammoth, Cenozoic Mammal #1
Science Source
Titanotherium, Cenozoic Mammal
Science Source
Mammoth, Cenozoic Mammal
Science Source
Megaloceros, Cenozoic Mammal
Science Source
Coryphodon, Cenozoic Mammal
Science Source