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Ammonite fossil imprint on stone, macro view of petrified prehistoric extinct animal like snail. Shiny fossil in sandstone or limestone close-up. Concept of paleontology, geology, archeology and time

Bivalvia Fossil inside a limestone rock on moss floor. Gastropods from the jurassic period captured during autumn season.

close up on fossil fish in the rock

Frozen Puddle in the Meadow, Canada

rough round agate mineral sample with outer shell geode

Ammonite in limestone rock (Bavaria, Germany)

Marble mining plant at the east of the island. White stone in blocks and gravel. Seaside of the Thracian sea. Porto Vathy, island Thassos (Thasos), Greece.

prismatic quartz mineral clusters on rock specimens from the UK

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.

Calama, Chile

The normal liver cells or hepatocytes contain lipid droplets, more frequent near the central vein of hepatic lobules, that can be demonstrated using osmium tetroxide as fixative. In steatosis or fatty liver disease, the amount of lipid droplets is pathologically very increased.

bunch of natural sponges

Macro opalized ammonite ammolite

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.

Computer generated 3D illustration with the dinosaur Suchomimus in a landscape

Concretion formations in a rock in the Grand Staircase-Escalante National Monument in southern Utah during the fall. Concretions are precipitated mineral deposits that form in the spaces of sedimentary rock.

A large tidepool carved into the rocky shelf at Botanical Beach filled with marine life as the surf crashes nearby. Near Port Renfrew BC.

The Magdalen Islands (îles de la Madeleine) are an archipelago in the Canadian Gulf of St. Lawrence belonging to Quebec.

Coral in Molasses Reef

Backgrounds,Table, Material, Marble - Rock, Nature, Stone Material, Full Frame,

columnar basalt rock, Cape Stolbchaty on Kunashir Island, in the foreground bases of lava basalt columns form a kind of pavement

Scenery of Pamukkale in Turkey

Apache tear (obsidian) from the USA

Close-up paintings at La Cieneguilla Petroglyph Site near Santa Fe, NM. The petroglyphs were painted between circa 1400 and 1800 by Keresan-speaking Pueblo Indians.

...an old Spanish coin, a means of payment from the Iberian Peninsula made of metal

Interesting pattern in hot springs. Looks like a tree to me

A garden banden snail (Cepaea hortesis) in close-up on a stone in the morning sunlight.

fossil of ammonite. Limestone rock.

Boiling water bubbler Geyser. Active geyser with major eruptions. Yellowstone NP, Wyoming, US

Convoluted brain coral.

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