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Leiden leaf c.s. under microscope
Rudists embeded in sandstones, cross sections.\nCretaceous marine fossis near Barcelona.
Microscopic photo of a thin section of calcareous tufa of Holocene age.
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Explore fossil limestone slabs from Ruegen featuring petrified brachiopods, providing insights into ancient marine environments.
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.
close up on Trilobite fossil isolated on white background
Ammomite (Ammomoideae) fossil imprint on a limestone. The image was captured in the canton of schaffhausen during springtime.
trilobite fossil texture as very nice natural background
Fossils of marine life.Ammonite fossils
prehistoric under water life form
blue mold close up background, macro photography
four Fossils Specimens  : Practical Specimens for Study of Earth Science / Isolated white
Salt formations on the stones of Garmasr salt cave in Iran
Trilobites
Calmitacea inside a peace of stone. The fossil was growing in the Carboniferous Period (around 360 to 300 million years ago).
trilobite fossil
Fossilised Fish
The stalactites are in wooden trays in an exhibition hall
An arid mountain landscape with an abandoned structure
Solnhofen Limestone with Subplanites sp. Ammonite fossil
Photomicrograph of filamentous blue-green algae, Oscillatoria species. Each band along the stand is one cell. This filament is very short probably having recently parted from a longer one. Filaments are typically many times longer. This algae is mobile, it moves and twists through the water. San Francisco Bay, California, USA. Live specimen. Wet mount, 40X objective, transmitted brightfield illumination. Note - motion blur of live specimen, very shallow depth of field, chromatic aberration and uneven focus are inherent in light microscopy.
Epidermis. Electron microscope micrograph showing a keratinocyte of spinous layer. The epithelial cell has a polygonal shape, central nucleus with nucleolus, cytoplasm full of keratin filament bundles, and numerous dark desmosomes crossing the intercellular spaces.
Ammonite inside a limestone rock. The ammonites where living between 409 and 65 million years ago (Mya). The image was captured in the canton of Aargau (Switzerland).
An eroding rock with fossil inclusions surrounded by beach rock swash deposits.  These types of rocks are fairly common to find on NW USA beaches for those with a keen eye.
Strunjan cliff: .An 80 meters high cliff along 200 meters of the coast, a natural reserve and is the highest flysch cliff in the east part of the Adriatic.
Beautiful fossil of some sort of dinosaur reptile from Madagascar, isolated on a white background
Ammonite Fossil preserved in the rocks mined from the reserve found in the Middle Atlas Mountains of Morocco
isolated on black.
elrathia Kingi trilobite fossil in gray shale matrix.
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