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Beautiful fossil of some sort of dinosaur reptile from Madagascar, isolated on a white background
Calmitacea inside a peace of stone. The fossil was growing in the Carboniferous Period (around 360 to 300 million years ago).
Red rock formation as background.
Unique underground geology of  stalactites and stalagmites.
Captive Bilby on red soil
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.
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
Cross-section Dicot, Monocot and Root of Plant Stem under the microscope for classroom education.
The wilderness of Cape Point National Park, Western Cape, South Africa
Leiden leaf c.s. under microscope
Boca Do Inferno - Hell's Mouth, Coastal scenery of Av. Rei Humberto II de Itália, cascais, Portugal.
Petrified fossil crinoids (sea lilies, featherstars) in stone
Salt formations on the stones of Garmasr salt cave in Iran
Trilobite Dalmanites sp. 400 million years ago
Flying over valley of Cappadocia. Shoot directly above. Goreme village area. Türkiye
Fossilized dinosaur tooth on a sandstone.
Sunset in Cape Town and surroundings - Western Cape
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.
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.
prehistoric fossil section of an ammonite
Close up of an Ammonite Fossil
Close-up of dried leaf on wet rock, Venezuela
natural mineral on a green background with crystal quartz crystals is a  beautiful background and an abstract, macro
elrathia Kingi trilobite fossil in gray shale matrix.
The largest is 11cm high.
crystaline Barite or Barytes mineral sample- clear or translucent dense mineral collected from the UK
The detail of fossa ((Cryptoprocta ferox). Unique endemic species, close up
Fossil Fern inside carbon rocks. The image was captured in the Swiss Alps.
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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