Primate skull comparison

2020 × 1484

Human skull held in hand

2912 × 4368

ancient human skull

2112 × 3168

skull model on black surface

2576 × 1932

primate skull on display

2576 × 1932

primate skull on display

2576 × 1932

Trilobite fossil in rock

2796 × 3567

fossil trilobite in rock

2272 × 1704

trilobite fossil specimen

2840 × 2424

trilobite fossil in rock

2000 × 1333

man with fossil specimen

1161 × 1183

fossil fish in stone

1600 × 1254

Dinosaur fossil discovery

1280 × 1024

fossilized dinosaur footprints

1500 × 1500

fossilized dinosaur neck vertebrae

6970 × 5561

Prehistoric rhinoceroses in a lush landscape

5502 × 3084

fossilized trilobite specimen

2272 × 1704

Early elephants and mastodons

1300 × 828

Dinosaurs in a prehistoric landscape

2682 × 991

Dinosaurs in prehistoric forest

1280 × 829