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prehistoric under water life form
Fossils of marine life.Ammonite fossils
Microscopic photo of a thin section of calcareous tufa of Holocene age.
Ammomite (Ammomoideae) fossil imprint on a limestone. The image was captured in the canton of schaffhausen during springtime.
Explore fossil limestone slabs from Ruegen featuring petrified brachiopods, providing insights into ancient marine environments.
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.
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.
Fossilized fish
Fossil ammonite fossil isolated on white background with clipping path
Ammonite Fossil preserved in the rocks mined from the reserve found in the Middle Atlas Mountains of Morocco
trilobite fossil
Calmitacea inside a peace of stone. The fossil was growing in the Carboniferous Period (around 360 to 300 million years ago).
four Fossils Specimens  : Practical Specimens for Study of Earth Science / Isolated white
elrathia Kingi trilobite fossil in gray shale matrix.
Ancient prehistoric fossils. An archaeological find. the first living beings on the planet earth. the first ancient primitive animals. cephalopods
Salt formations on the stones of Garmasr salt cave in Iran
isolated on black.
Fossilised Fish
The stalactites are in wooden trays in an exhibition hall
An arid mountain landscape with an abandoned structure
Prehistoric fish fossil impint in stone isolated on a white background
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.
Old stones background. imprint of an ancient ammonite from the Mesozoic era.
Ammomite (Ammomoideae) fossil imprint on a limestone. The image was captured in the canton of schaffhausen during springtime.
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.
Fossilised Fish
Trilobite Paradoxides spiulosus
blue mold close up background, macro photography
Beautiful fossil of some sort of dinosaur reptile from Madagascar, isolated on a white background
Twisted rock strata
Free Images: "bestof:Walcott Cambrian Geology and Paleontology II text figure 03.jpg Text figure 3 Charles D Walcott Middle Cambrian Holothurians and Medusae Smithsonian"
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