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Beautiful fossil of some sort of dinosaur reptile from Madagascar, isolated on a white background
Unique underground geology of  stalactites and stalagmites.
Keichousaurus hui sauropterygian fossil from China
Ammonite and Orthoceras Fossil preserved in the rocks mined from the reserve found in the Middle Atlas Mountains of Morocco
Leiden leaf c.s. under microscope
Photomicrograph of planaria, a flatworm, Dugesia species. Slight motion blur in head. Freshwater stream, San Luis Obispo, California. Live specimen. Wet mount, 2.5X objective, transmitted brightfield illumination.
Red rock formation as background.
Asbestos family mineral band in geological rock sample
Light microscope micrograph of a retina stained with the Golgi method. In the inner layer there are many amacrine cells with pear-shaped cell bodies located in the inner nuclear layer and dendrites ending in the inner plexiform layer.
sunstone mineral stone sample macro photography
The largest is 11cm high.
Calmitacea inside a peace of stone. The fossil was growing in the Carboniferous Period (around 360 to 300 million years ago).
Light coloured fossilized Megalon tooth on white background
The wilderness of Cape Point National Park, Western Cape, South Africa
Captive Bilby on red soil
Fossilised Fish
macro mineral fluorite stone on black background close up
Boca Do Inferno - Hell's Mouth, Coastal scenery of Av. Rei Humberto II de Itália, cascais, Portugal.
Close up of an Ammonite Fossil
Agate is a microcrystalline variety of quartz, chiefly chalcedony, cryptocrystalline form of silica.  Although agates may be found in various kinds of rock, they are classically associated with volcanic rocks but can be common in certain metamorphic rocks. Most agates occur as nodules in volcanic rocks or ancient lavas where they represent cavities originally produced by the disengagement of volatiles in the molten mass which were then filled, wholly  by siliceous matter deposited in regular layers upon the walls. Cathedral Valley, Capitol Reef National Park, Utah.
Rock texture
native lead from Lautenthal, Harz, Germany isolated on white background
Close-up of dried leaf on wet rock, Venezuela
Porous coral sea stone, pebble isolated on a white background.
Shell Collection
Lavaka of Ankarokaroka erosion canyon in Ankarafantsika National Park, incredible moonscape with dry forest and lake, Boeny Region of Northwest Madagascar
Salt formations on the stones of Garmasr salt cave in Iran
Fossilized dinosaur tooth on a sandstone.
Impala in a South African Game Reserve, a young male preening.
Free Images: "bestof:Hercoglossa Madagascar.png en Hercoglossa species fossil; a nautiloid characterized by a markedly sinuous sutural pattern - Specimen from Madagascar Tulear area"
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