South American hoofed mammals

1300 × 820

Prehistoric rodents and lagomorphs

1300 × 815

close-up of a shark tooth

3264 × 2448

Two woolly rhinoceroses in snow

2586 × 3084

Tyrannosaurus Rex in jungle

1024 × 768

Tyrannosaurus rex in motion

1440 × 900

Whale washed ashore on beach

1920 × 1200

Beached whale on the shore

3648 × 2736

Prehistoric fish in dark waters

1728 × 1267

School of prehistoric fish

1024 × 768

Fossil of a stalked crinoid

1280 × 1024

Basking shark with open mouth

1690 × 1306