Neolithic stone tools
Neolithic stone tool
Flint knappings from making of tools.
Obsidian mineral stone
Flints knapped for use as knives
Snowflake obsidian
Obsidian, a glassy igneous rock
Obsidian
Variety of Igneous Rocks
Mahogany Obsidian, Oregon, USA
Obsidian bubbles
Mahogany obsidian
Obsidian flow
Obsidian specimen
Lava landscape
Obsidian-rich lava flow, Tenerife
Pebbles of snowflake obsidian rock lying on sand
Obsidian lava
Obsidian rock
Obsidian dome
Density of pumice and obsidian
Snowflake Obisidian
Homo heidelbergensis tooth
Homo heidelbergensis teeth
Homo georgicus model
Homo heidelbergensis lower jaw
Homo habilis upper jaw (OH 65)
Neanderthal fossil skull La Ferrassie 1
Cro-Magnon 1 fossil skull
Mousterian stone tool
TOLOWA dancing head-dress 1923
Olduvai biface stone tool
Paranthropus robustus skull
Homo erectus skull
Stone-age flint blades
Homo heidelbergensis skull (Cranium 5)
El Torcal Megalithic Burial Mound
Early human, Stone Age culture
Fossil Butte National Monument, Wyoming, USA
Volunteer at Fossil Butte National Monument visitor center
Flint arrowhead
黒曜石
Basaltic dyke, polarised light micrograph
Pebble tool
Homo heidelbergensis vertebra
Homo heidelbergensis skull, Broken Hill 1
Snowflake obsidian gemstone on white background
新緑の大瀧神社の御神体
Priscacara fish fossil
Phareodus fish fossil
Fossilised leaf
Fossilised leaves
Fish fossils
Fossil museum
Fossil arachnid
Wiwaxia Burgess Shale fossil