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prehistoric under water life form
Calmitacea inside a peace of stone. The fossil was growing in the Carboniferous Period (around 360 to 300 million years ago).
Microscopic photo of a thin section of calcareous tufa of Holocene age.
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.
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.
Explore fossil limestone slabs from Ruegen featuring petrified brachiopods, providing insights into ancient marine environments.
Salt formations on the stones of Garmasr salt cave in Iran
Stones the structure of the nature background, gray texture. Iron mine, natural texture of volcanic stone
Geirangerfjord near Hellesylt in Norway.  This is seaweed in the Fjord.
four Fossils Specimens  : Practical Specimens for Study of Earth Science / Isolated white
Ammonite Fossil preserved in the rocks mined from the reserve found in the Middle Atlas Mountains of Morocco
Fossil Oyster
blue mold close up background, macro photography
Leiden leaf c.s. under microscope
plant Flower bud of Lilium brownii var.viridulum T.S.\nunder light mircoscope with white background
isolated on black.
Twisted rock strata
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.
The stalactites are in wooden trays in an exhibition hall
Photomicrograph of flatworm,
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.
Ancient fish fossil in stone
Fossil ammonite fossil isolated on white background with clipping path
elrathia Kingi trilobite fossil in gray shale matrix.
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.
The island of Oahu, in the state of Hawaii, from old camera film in 1987.
Beautiful fossil of some sort of dinosaur reptile from Madagascar, isolated on a white background
Natural ecology, stone, rust, texture, background, abstract, plain stone, rock, building material, shape, solid, marble, granite, sea stone, wall, floor, stone wall, color, nature, simplicity
Free Images: "bestof:Walcott Cambrian Geology and Paleontology II plate 26.jpg Plate 26 Middle Cambrian Crustaceans Marrella 1 Marrella splendens <small>Walcott</small> 2 Marrella"
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