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This is a detail of a rock that contains hundreds of marine fossils. The large one is a brachiopod. Actually most of them are different varieties of brachiopod. The circular ones with a stub in the center are crinoid stems. Found in Virginia.
...an old Spanish coin, a means of payment from the Iberian Peninsula made of metal
rough round agate mineral sample with outer shell geode
Bivalvia Fossil inside a limestone rock. Gastropods from the jurassic period captured next to moss covering a forest floor.
Other types of mushrooms have pores instead of gills. Like gills, pores produce spores, but they appear as small, sponge-like holes instead of thin blades. The little holes lead to tubes inside the cap. As spores mature, they eventually fall from the tubes out of holes and into their environment.
Photomicrograph of freshwater leech. Sucker attached to cover slip at bottom. Live specimen. Wet mount, 2.5X objective, transmitted brightfield illumination. Note - motion blur of live animal, very shallow depth of field, chromatic aberration and uneven focus are inherent in light microscopy.
A garden banden snail (Cepaea hortesis) in close-up on a stone in the morning sunlight.
Chicoreus Brunneus, Adusta Murex
Bowmans Beach, Sanibel Island
Florometra serratissima is a species of crinoid or feather star in the family Antedonidae. It is found off the Pacific coast of North America, usually in deep water.  Monterey Bay, California.
Closeup of a flexicalymene ouzregui trilobite fossil in sand. The fossil is from the ordovician era and about 450 million years old.
Macro shot of colorful plastic spirals and mesh on a mirror ball.
Sea shell isolated on white background. Close up
Slice Of Agate Crystal
Different Forms of Plants at Torre del Lago, Italy
chinese medicine Fu Hai Shi /Hai Fu Shi /Pumice /Bryozoatum on black background
Sea shells closeup on exhibition hall
Mineral polished crystal stone shotting.
A closeup of the black arches or nun moth, Lymantria monacha, sitting on wood in the garden
crystaline Barite or Barytes mineral sample- clear or translucent dense mineral collected from the UK
Shells attached to rocks are usually found on a rocky beach
Detail of half cut ripe gourd with seeds. Illuminated by soft daylight. Macro. Low depth of field.
Lotus seed closeup over white background
chinese medicine Rhizoma Cibotii, Cibotium barometz
Tiger and king prawns lie on a light table. Frozen products in ice glaze.
Ammonite in limestone rock (Bavaria, Germany)
Helicobacter pylori bacteria 3d render realistic medicine icon for logo isolated with clipping path. Microbiology health human illustration.
Fossils in rock in Northern Madagascar
color natural mineral collection as nice background
bunch of natural sponges
Free Images: "bestof:Meiolania platyceps 1.JPG en Skeleton of Meiolania platyceps a fossil Testudine took the foto on the American Museum of Natural History in New York 2008-04"
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Shield, Masai - African objects in the American Museum of Natural History - DSC05971.JPG
Charm necklace, Masai - African objects in the American Museum of Natural History - DSC05973.JPG
Stroop Report - Warsaw Ghetto Uprising 06.jpg
Stroop Report - Warsaw Ghetto Uprising 06b.jpg
Hyotherium major skull MNHN.jpg
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Diceros bicornis MNHN.jpg
'Sunset'_by_Edward_Mitchell_Bannister,_c._1875-80.jpg
Twilight (Sunset) by Frederic E. Church, 1856, oil on canvas - Albany Institute of History and Art - DSC08132.JPG
Washington_Crossing_the_Delaware_by_Emanuel_Leutze,_MMA-NYC,_1851.jpg
Albert_Bierstadt_-_The_Rocky_Mountains,_Lander's_Peak.jpg
La Liberté éclairant le Monde Jardin du Luxembourg blanc.jpg
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George_Bellows_-_Men_of_the_Docks_-_1912_-_The_National_Gallery.jpg
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IVAN_AIVAZOVSKY_-_The_Disembarkation_of_Christopher_Columbus_with_Companions_on_Three_Launches,_on_Friday_12th_October_1492,_At_Sunrise,_on_an_American_Island_Named_San_Salvador_by_Him_on_the_Very_Same_Day.jpg
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Thomas_Cole_-_The_Voyage_of_Life_Childhood,_1842_(National_Gallery_of_Art).jpg
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Lady_Elizabeth_Hamilton_(1753–1797),_Countess_of_Derby.jpg
Fra_Angelico,_Fra_Filippo_Lippi,_The_Adoration_of_the_Magi.jpg
Natural History Museum HDR.jpg
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Pittsburgh museum of natural history and art.jpg
Piano, Horace Waters, New York - O. Henry Museum - Austin, Texas - DSC09223.jpg
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Moai statue at the la natural history museum.jpg
Megaloceros giganteus Paris 25 05 2013 01.jpg
Gypsum 'desert roses', Chihuahua, Mexico - Natural History Museum of Utah - DSC07463.JPG
Square piano, Chickering, c. 1830 - National Museum of American History - DSC00078.jpg
Allosaurus.jpg
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Earrings, Maasai peoples, Kenya or Tanzania, 20th century, hide, metal, glass, plastic - Fernbank Museum of Natural History - DSC00039.JPG
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Mola mola stuffed museum La Rochelle.jpg
Hipparion gracile MNHN1.jpg
Lagothrix lagotricha grison mâle MNHN.jpg
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Ceinture amazonienne caribe.jpg
Cancer bellianus Johnston 1861 stuffed museum La Rochelle.jpg
Homotherium crenatidens fabrini MNHN.jpg
Mandrillus sphinx MNHN.jpg
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