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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).
Ancient fish fossils are on a rock
Keichousaurus hui sauropterygian fossil from China
trilobite stone fossil sample with ridges and detail
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.
Leiden leaf c.s. under microscope
Microscopic photo of a thin section of calcareous tufa of Holocene age.
Rudists embeded in sandstones, cross sections.\nCretaceous marine fossis near Barcelona.
Petrified fossil crinoids (sea lilies, featherstars) in stone
Calmitacea inside a peace of stone. The fossil was growing in the Carboniferous Period (around 360 to 300 million years ago).
isolated on black.
Fossilised Fish
Imprint of the sole of a left foot sports shoe on a wet muddy ground, sunny day in nature. shape and texture
Ammonite Fossil preserved in the rocks mined from the reserve found in the Middle Atlas Mountains of Morocco
Beautiful fossil of some sort of dinosaur reptile from Madagascar, isolated on a white background
Old orange and black scuffed damaged marbled paper, Original over 150+ years old
Fossil of a large shell in yellow-red limestone. Coast of Algarve, Portugal
Bivalvia Fossils inside a large Ammonit. Gastropods from the jurassic period.
close up on Trilobite fossil isolated on white background
Photomicrograph of planaria, a flatworm, Dugesia species. Slight motion blur in head. Freshwater stream, San Luis Obispo, California. Live specimen. Wet mount, 2.5X objective, transmitted brightfield illumination.
complete pyritised Leonaspis (Kettneraspis) sp. trilobite from Morocco
Visitors hike on a guided tour, open to the public, of the Corral Bluffs Open Space badlands in Colorado Springs, Colorado on a beautiful fall day on October, 2, 2021. A visitor holds a fragile fossil leaf from the area. The geology of the area spans the million years after the dinosaur extinction and houses world renowned, rare, full mammal skulls and numerous tropical vertebrate and plant fossils from 66 million years ago.
The stalactites are in wooden trays in an exhibition hall
Fossilised Fish
A trilobite fossil
Cracked dried earth crust at the bottom of a dried up lake  with dead dried fish.
A fish fossil found in a rock near italian beach
Unique underground geology of  stalactites and stalagmites.
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