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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 flatworm,
The stalactites are in wooden trays in an exhibition hall
Fossilized fish
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.
blue mold close up background, macro photography
Isolated on black.
Calmitacea inside a peace of stone. The fossil was growing in the Carboniferous Period (around 360 to 300 million years ago).
Leiden leaf c.s. under microscope
The island of Oahu, in the state of Hawaii, from old camera film in 1987.
Fossil Oyster
plant Flower bud of Lilium brownii var.viridulum T.S.\nunder light mircoscope with white background
four Fossils Specimens  : Practical Specimens for Study of Earth Science / Isolated white
Fossilised Fish
Fossil scallop shells from rocks on Gozo island, Malta
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).
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 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.
Old stones background. imprint of an ancient ammonite from the Mesozoic era.
Geirangerfjord near Hellesylt in Norway.  This is seaweed in the Fjord.
centropyxis aculeata (amoeboid organism) under the microscope - optical microscope x400 magnification
Salt formations on the stones of Garmasr salt cave in Iran
Chaetoceros is the largest genus of marine planktonic diatoms, phytoplankton
Twisted rock strata
isolated on black.
Fossilised Fish
Free Images: "bestof:Walcott Cambrian Geology and Paleontology II plate 33.jpg Plate 33 Middle Cambrian Crustaceans Carnarvonia and Tuzoia 1 Carnarvonia venosa <small>Walcott</..."
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