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Microscopic photo of a thin section of calcareous tufa of Holocene age.
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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.
Bivalvia Fossils inside a large Ammonit. Gastropods from the jurassic period.
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.
The stalactites are in wooden trays in an exhibition hall
Knightia alta is an extinct genus of fish well-known from abundant fossils found in the Green River Formation of Wyoming, United States. They rarely exceeded 10 cm in length and are found throughout the formation. Knightia alta, Eocene Epoch, Green River Shale. Fossil.
prehistoric under water life form
plant Flower bud of Lilium brownii var.viridulum T.S.\nunder light mircoscope with white background
Leiden leaf c.s. under microscope
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
Salt formations on the stones of Garmasr salt cave in Iran
Trilobite Dalmanites sp. 400 million years ago
Ammonite Fossil preserved in the rocks mined from the reserve found in the Middle Atlas Mountains of Morocco
Isolated on black.
blue mold close up background, macro photography
Fossil scallop shells from rocks on Gozo island, Malta
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.
Photomicrograph of flatworm,
centropyxis aculeata (amoeboid organism) under the microscope - optical microscope x400 magnification
Fossilized fish
Ancient fish fossils are on a rock
Geirangerfjord near Hellesylt in Norway.  This is seaweed in the Fjord.
Diatoms are photosynthesising algae, they have a siliceous skeleton (frustule) and are found in almost every aquatic environment including fresh and marine waters, soils, in fact almost anywhere moist.
elrathia Kingi trilobite fossil in gray shale matrix.
isolated on black.
The island of Oahu, in the state of Hawaii, from old camera film in 1987.
Free Images: "bestof:Walcott Cambrian Geology and Paleontology II plate 29.jpg Plate 29 Middle Cambrian Crustaceans Molaria Habelia and Yohoia 1 Molaria spinifera <small>Walcott</..."
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