Lascaux Cave Painting
Jean Paul Ferrero and Jean Michel Labat
Cryptobranchus, Living Fossil
Science Source
Pliocene Epoch, Marine Fossils
Science Source
Fossil Soft-shelled Turtle
John Cancalosi/Okapia
Richard Owen, English Paleontologist #13
Science Source
Fossil Turtle
John Cancalosi/Okapia
Mastodon, Cenozoic Mammal #2
Science Source
Rhinoceros, Extant Cenozoic Mammal
Science Source
Priscacara Fossil, Eocene Sunfish
Science Source
Fossil Flower
Barbara Strnadova
Mastodon, Cenozoic Mammal
Science Source
Feast During The Reindeer Epoch
Science Source
Feast During The Reindeer Epoch #1
Science Source
Feast During The Reindeer Epoch
British Library
Megatherium, Cenozoic Mammal #7
Science Source
Toxodon, Extinct Mammal #1
Science Source
Prehistoric Men Battle Cave Bear
Science Source
Dinosaurs Fighting
Science Source
Harlans Giant Ground Sloth
Millard H. Sharp
Harlans Giant Ground Sloth #1
Millard H. Sharp
Megatherium, Cenozoic Mammal #5
Science Source
Megatherium, Cenozoic Mammal #3
Science Source
Megatherium, Cenozoic Mammal #4
Science Source
Megatherium, Cenozoic Mammal #6
Science Source
Late Tertiary Landscape
Chase Studio
Glyptodon, Cenozoic Mammal
Science Source
Palaeotherium, Cenozoic Mammal
Science Source
Toxodon, Extinct Mammal #4
Science Source
False Saber Tooth Cat #2
Millard H. Sharp
Megaloceros, Cenozoic Mammal
Science Source
Sivatherium, Cenozoic Mammal
Science Source
Cacops, Cenozoic Amphibian
Science Source
Hyracotherium, Cenozoic Mammal
Science Source
Megatherium Extinct Ground Sloth #4
Science Source
Megatherium, Cenozoic Mammal #2
Science Source
Toxodon, Extinct Mammal #3
Science Source
Dire Wolf Fossil
Millard H. Sharp
Dire Wolf Skull Fossil
Millard H. Sharp
Fish Fossil #1
Scott Camazine
Natural Jetty Formed By Igneous Rock
G. R. Roberts
Miocene Fossils
Inga Spence
Prehistoric, Eocene Landscape
Science Source
Prehistoric, Miocene Landscape #1
Science Source
Whale Ear Bone Fossil #1
Millard H. Sharp
Fossil Beech Leaf
Theodore Clutter
Mioplosus Labracoides Fossil
Jeffrey Lepore
Fossil Of A Fish Swallowing Another Fish
Jeffrey Lepore
Knightia Fish Fossil #4
Jeffrey Lepore
Diplomystus Dentatus Ribs
Jeffrey Lepore
Fossil Fish Devouring Another
E.r. Degginger
False Saber Tooth Cat #3
Millard H. Sharp
Diprotodon, Cenozoic Mammal
Science Source
Alexandre Parent-duchatelet, French
Science Source
Megatherium, Cenozoic Mammal
Science Source
Megalonyx, Cenozoic Mammal
Science Source
Uintatherium, Aka Dinoceras, Cenozoic
Science Source
Megatherium, Cenozoic Mammal #1
Science Source
Oxydactylus, Cenozoic Mammal
Science Source
Titanotherium, Cenozoic Mammal
Science Source
Woolly Rhino, Cenozoic Mammal
Science Source
Mastodon, Cenozoic Mammal #3
Science Source
Dinornis, Giant Moa, Cenozoic Bird
Science Source
Mammoth, Cenozoic Mammal
Science Source
Palaeotherium, Cenozoic Mammal #1
Science Source
Megatherium, Extinct Ground Sloth #2
Science Source
Mammoth
Photo Researchers
Fossil Garpike
James L. Amos
Mammoth, Cenozoic Mammal #1
Science Source
Turtle Fossil
John Cancalosi
Woolly Mammoth
Science Source